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feat(bin): php-switcher for Brew based version changes
Signed-off-by: Ismo Vuorinen <ismo@ivuorinen.net>
This commit is contained in:
443
local/bin/php-switcher
Executable file
443
local/bin/php-switcher
Executable file
@@ -0,0 +1,443 @@
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#!/usr/bin/env bash
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#
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# Brew PHP Switcher
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#
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# Use to switch between PHP versions installed via Homebrew.
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#
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# Usage: php-switcher <version> [--help|--installed|--current|--auto]
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# Example: php-switcher 7.4
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# Example: php-switcher 8.0
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# Example: php-switcher latest
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# Example: php-switcher --auto
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#
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# Created by Ismo Vuorinen <https://github.com/ivuorinen> (2025)
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# Licensed under the MIT License (https://opensource.org/licenses/MIT)
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set -euo pipefail # Add error handling
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# Configuration
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LATEST_VERSION_FORMULA="php" # The formula name for latest PHP version
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PHP_VERSION_FILE=".php-version" # File name to look for when auto-switching
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# Switch brew php version
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function check_dependencies()
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{
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if ! command -v brew > /dev/null 2>&1; then
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echo "Error: Homebrew is not installed"
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exit 1
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fi
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}
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function usage()
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{
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echo "Brew PHP Switcher - Switch between PHP versions installed via Homebrew"
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echo ""
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echo "Usage: php-switcher <version> [options]"
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echo ""
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echo "Options:"
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echo " --help Show this help message"
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echo " --installed List installed PHP versions"
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echo " --current Show currently active PHP version"
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echo " --auto Auto-switch based on .php-version file in current directory"
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echo ""
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echo "Examples:"
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echo " php-switcher 7.4"
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echo " php-switcher 8.0"
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echo " php-switcher latest"
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echo " php-switcher --auto"
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echo ""
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echo "Auto-switching:"
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echo " Create a .php-version file in your project directory with a PHP version"
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echo " Example .php-version content: 8.1"
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echo ""
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exit 0
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}
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function list_php_versions()
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{
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# Check Homebrew's installation path for PHP versions
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local brew_cellar
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brew_cellar="$(brew --cellar)"
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local php_paths=()
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local versions=()
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local formulas=()
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local active=()
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# Look for all PHP installations in Homebrew Cellar
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if [[ -d "$brew_cellar/php" ]]; then
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php_paths+=("$brew_cellar/php")
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fi
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# Look for versioned PHP installations
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while IFS= read -r dir; do
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if [[ -d $dir ]]; then
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php_paths+=("$dir")
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fi
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done < <(find "$brew_cellar" \
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-maxdepth 1 -name 'php@*' \
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-type d 2> /dev/null || echo "")
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if [[ ${#php_paths[@]} -eq 0 ]]; then
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echo "No PHP versions installed through Homebrew."
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return 1
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fi
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# Find which version is currently linked
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local current_bin
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current_bin=$(readlink -f \
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"$(command -v php 2> /dev/null)" \
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2> /dev/null || echo "")
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# Collect data for each installed PHP version
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for path in "${php_paths[@]}"; do
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local formula
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formula=$(basename "$path")
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local version_label
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if [[ $formula == "php" ]]; then
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version_label="latest"
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else
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version_label="${formula#php@}"
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fi
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# Find the actual version from the directory structure
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local version_dir
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version_dir=$(find "$path" -maxdepth 1 -type d \
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| grep -v "^$path$" | sort -V | tail -1)
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if [[ -n $version_dir && -d "$version_dir/bin" ]]; then
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local full_version
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full_version=$("$version_dir/bin/php" -v 2> /dev/null \
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| grep -oE 'PHP [0-9]+\.[0-9]+\.[0-9]+' \
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| head -1 \
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| cut -d' ' -f2 \
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|| echo "$version_label.x")
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# Determine if this is the active version
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local is_active="No"
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if [[ -n $current_bin && $current_bin == "$version_dir/bin/php" ]]; then
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is_active="Yes"
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fi
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# Handle the 'latest' case - replace with actual version number
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local display_version
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if [[ $version_label == "latest" ]]; then
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display_version="${full_version%.*}" # Get major.minor version
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else
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display_version="$version_label"
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fi
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# Store data for table display
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versions+=("$display_version")
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formulas+=("$formula")
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active+=("$is_active")
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fi
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done
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# Calculate maximum column widths
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local max_version_width=7 # "Version" header length
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local max_formula_width=7 # "Formula" header length
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local max_active_width=6 # "Active" header length
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local count=${#versions[@]}
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for ((i = 0; i < count; i++)); do
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# Update max widths if needed
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if [[ ${#versions[i]} -gt $max_version_width ]]; then
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max_version_width=${#versions[i]}
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fi
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if [[ ${#formulas[i]} -gt $max_formula_width ]]; then
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max_formula_width=${#formulas[i]}
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fi
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done
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# Build header with correct widths
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local header_format="| %-${max_version_width}s | %-${max_formula_width}s | "
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header_format+="%-${max_active_width}s |"
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local separator_line="|"
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for ((i = 0; i < max_version_width + 2; i++)); do
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separator_line="${separator_line}-"
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done
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separator_line="${separator_line}|"
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for ((i = 0; i < max_formula_width + 2; i++)); do
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separator_line="${separator_line}-"
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done
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separator_line="${separator_line}|"
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for ((i = 0; i < max_active_width + 2; i++)); do
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separator_line="${separator_line}-"
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done
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separator_line="${separator_line}|"
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# Print table header
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# shellcheck disable=SC2059
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printf "$header_format\n" "Version" "Formula" "Active"
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echo "$separator_line"
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# Print table rows
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local row_format="| %-${max_version_width}s | %-${max_formula_width}s | "
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row_format+="%-${max_active_width}s |"
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for ((i = 0; i < count; i++)); do
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# shellcheck disable=SC2059
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printf "$row_format\n" "${versions[i]}" "${formulas[i]}" "${active[i]}"
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done
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}
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function get_php_formula_for_version()
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{
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local version="$1"
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# Handle "latest" as a special case
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if [[ $version == "latest" ]]; then
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echo "$LATEST_VERSION_FORMULA"
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return 0
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fi
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# The regular version case (e.g., 7.4, 8.1)
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echo "php@$version"
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}
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function check_formula_installed()
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{
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local formula="$1"
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local brew_cellar
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brew_cellar="$(brew --cellar)"
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if [[ $formula == "php" ]]; then
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if [[ -d "$brew_cellar/php" ]]; then
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return 0
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fi
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elif [[ -d "$brew_cellar/$formula" ]]; then
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return 0
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fi
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return 1
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}
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function unlink_current_php()
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{
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local current_formula=""
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# Find formulas more safely
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while IFS= read -r formula; do
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if [[ -n $formula ]]; then
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local linked
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linked=$(brew info --json=v1 "$formula" \
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| grep -o '"linked_keg":"[^"]*"' \
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| grep -v ':"null"')
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if [[ -n $linked ]]; then
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current_formula="$formula"
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break
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fi
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fi
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done < <(brew list --formula | grep -E '^php(@[0-9]+\.[0-9]+)?$' || echo "")
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# If we found a linked formula, unlink it
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if [[ -n $current_formula ]]; then
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echo "Unlinking current PHP version ($current_formula)..."
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brew unlink "$current_formula" > /dev/null 2>&1 || true
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fi
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}
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function link_php_version()
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{
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local formula="$1"
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if ! check_formula_installed "$formula"; then
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echo "Error: PHP formula '$formula' is not installed"
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echo "Available versions:"
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list_php_versions
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exit 1
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fi
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echo "Linking $formula..."
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if ! brew link --force --overwrite "$formula" > /dev/null 2>&1; then
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echo "Error: Failed to link $formula. Try running manually:"
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echo " brew link --force --overwrite $formula"
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exit 1
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fi
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# Verify the switch worked
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if ! command -v php > /dev/null 2>&1; then
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echo "Warning: PHP was linked but may not be working correctly"
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fi
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}
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function get_current_version()
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{
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if ! command -v php > /dev/null 2>&1; then
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echo "No PHP currently linked"
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return 1
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fi
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local version
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version=$(php -v 2> /dev/null \
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| grep -oE 'PHP [0-9]+\.[0-9]+\.[0-9]+' \
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| head -1)
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if [[ -z $version ]]; then
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echo "Unable to determine PHP version"
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return 1
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fi
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# Find the corresponding formula
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local current_version
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current_version=$(echo "$version" | cut -d' ' -f2)
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local major_minor
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major_minor=$(echo "$current_version" | cut -d'.' -f1,2)
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# Check if it's the latest version
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if check_formula_installed "php" \
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&& brew info --json=v1 php \
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| grep -o '"linked_keg":"[^"]*"' \
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| grep -v ':"null"' \
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| grep -q .; then
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echo "Current PHP version: $current_version (latest)"
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else
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echo "Current PHP version: $current_version (php@$major_minor)"
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fi
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}
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function validate_version()
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{
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local version="$1"
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# Valid formats: x.y or latest
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if [[ ! $version =~ ^([0-9]+\.[0-9]+|latest)$ ]]; then
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echo "Error: Invalid PHP version format. Use x.y format (e.g., 7.4) or"
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echo " 'latest'"
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exit 1
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fi
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}
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function find_php_version_file()
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{
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local dir="$PWD"
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# Look for .php-version file in current directory and all parent directories
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while [[ $dir != "/" ]]; do
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if [[ -f "$dir/$PHP_VERSION_FILE" ]]; then
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echo "$dir/$PHP_VERSION_FILE"
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return 0
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fi
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dir=$(dirname "$dir")
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done
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# Check the root directory as well
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if [[ -f "/$PHP_VERSION_FILE" ]]; then
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echo "/$PHP_VERSION_FILE"
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return 0
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fi
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return 1
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}
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function auto_switch_php_version()
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{
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local version_file
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# Try to find a .php-version file
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version_file=$(find_php_version_file) || {
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echo "No .php-version file found in current directory or any parent"
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echo "directory. Create a $PHP_VERSION_FILE file with your desired"
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echo "PHP version (e.g., 8.1)"
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exit 1
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}
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# Read the version from the file
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local version
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version=$(tr -d '[:space:]' < "$version_file")
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echo "Found $PHP_VERSION_FILE file at: $version_file"
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echo "Requested PHP version: $version"
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# Validate the version
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validate_version "$version"
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# Switch to the specified version
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switch_php_version "$version"
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}
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function switch_php_version()
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{
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local version="$1"
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# Get the formula name for the version
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local formula
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formula=$(get_php_formula_for_version "$version")
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# Check if the requested PHP version is installed
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if ! check_formula_installed "$formula"; then
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echo "Error: PHP version $version is not installed"
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echo ""
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list_php_versions
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exit 1
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fi
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# Get the current version info for comparison
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local current_info
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current_info=$(get_current_version 2> /dev/null || echo "None")
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# Skip if we're already on the requested version
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if [[ $current_info == *"$version"* ]]; then
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echo "PHP version $version is already active"
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exit 0
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fi
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# Perform the switch
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unlink_current_php
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link_php_version "$formula"
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# Verify the switch
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echo ""
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echo "Switched to:"
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get_current_version
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echo ""
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echo "PHP executable: $(command -v php)"
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}
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function main()
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{
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local version=""
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# Parse arguments
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case "${1:-}" in
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--help)
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usage
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;;
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--installed)
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list_php_versions
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exit 0
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;;
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--current)
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get_current_version
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exit 0
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;;
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--auto)
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auto_switch_php_version
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exit 0
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;;
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"")
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usage
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;;
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*)
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version="$1"
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;;
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esac
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# Validate and switch to the specified version
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validate_version "$version"
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switch_php_version "$version"
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}
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# Run the script
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check_dependencies
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if [[ ${#@} -eq 0 ]]; then
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usage
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else
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main "$@"
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fi
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# vim: ft=bash sw=4 ts=4 et tw=80 cc=80 :
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