PHP's Snippets

CodeIgniterFunctions.php

public function is_ascii($str) {
	return (preg_match('/[^\x00-\x7F]/S', $str) === 0);
}
	
function codificacao($string) {
	return mb_detect_encoding($string.'x', 'UTF-8, ISO-8859-1');
}

function word_limiter($str, $limit = 100, $end_char = '…') {
	if (trim($str) === '') return $str;
		
	preg_match('/^\s*+(?:\S++\s*+){1,'.(int) $limit.'}/', $str, $matches);
    	return (strlen($str) === strlen($matches[0])) ? rtrim($matches[0]).'' : rtrim($matches[0]);
}


function character_limiter($str, $n = 500, $end_char = '…') {
	if (mb_strlen($str) < $n) return $str;
		
	$str = preg_replace('/ {2,}/', ' ', str_replace(array("\r", "\n", "\t", "\x0B", "\x0C"), ' ', $str));

	if (mb_strlen($str) <= $n) return $str;

	$out = '';
	foreach (explode(' ', trim($str)) as $val) {
		$out .= $val.' ';

		if (mb_strlen($out) >= $n) {
			$out = trim($out);
			return (mb_strlen($out) === mb_strlen($str)) ? $out : $out.$end_char;
		}
	}
}