PHP Helpers

helpers.php

<?php

if ( ! function_exists('parseString')) {
	/**
	 * Parse a string and replace variables in the form of @(varName)
	 * with values of passed in variables in the form of $varName
	 *
	 * @param  string $string
	 * @param  array $data
	 * @param  closure $callback
	 * @return string
	 */
	function parseString($string, $data = [], $callback = null) {
		return preg_replace_callback('/(@\(([A-Z]+)\))/i', function($matches) use($data, $callback) {
			$match = $matches[2];

			if (!isset($data[$match])) return $matches[1];

			if (!is_null($callback)) return $callback($data[$match]);

			return $data[$match];
		}, $string);
	}
}