Zsh function to change php version per project (directory) using phpbrew

phpbrew_change_by_dir.sh

# Add at the end of your .zshrc file
# After every command `cd`, it will check a ".phpbrew" file in the current directory and if it exists it will change the version of php automatically
# Create a .phpbrew file like this: `echo "7.4.4" > .phpbrew` in the folder you want to use the specific version of php

function phpbrew_change_by_dir() {
  emulate -L zsh
	if [ -f ".phpbrew" ]; then
    PHPBREW_LOCAL_VERSION=$(cat .phpbrew);
    COMMAND="phpbrew use ";

    if [ $(php -r "echo phpversion();") != $PHPBREW_LOCAL_VERSION ]; then
      eval "$COMMAND $PHPBREW_LOCAL_VERSION";
    fi
  fi
}

# hook function
chpwd_functions=(${chpwd_functions[@]} "phpbrew_change_by_dir")
# run command when open a new shell session
phpbrew_change_by_dir