Cut a string on a specific length or make the long string shorter in php with spaces support.

truncate.php

<?php

	/**
    	 *
	 * Make the string of a defined length
	 * 
	 * @param string $string 
	 * @param integer $max_length 
	 * @param boolean $trunc_at_space
	 * @param string  $replacement
	 * @return Short String
	 *
	 */
	public function do_truncate($string, $max_length = 30, $trunc_at_space = false, $replacement = '')
	{
		$max_length -= strlen($replacement);
		$string_length = strlen($string);
		if($string_length <= $max_length)
			return $string;
		if( $trunc_at_space && ($space_position = strrpos($string, ' ', $max_length-$string_length)) )
			$max_length = $space_position;
		return substr_replace($string, $replacement, $max_length);
	}