1 files changed, 32 insertions, 0 deletions
diff --git a/include/utf8/strspn.php b/include/utf8/strspn.php
new file mode 100644
index 0000000..49d300a
--- /dev/null
+++ b/include/utf8/strspn.php
@@ -0,0 +1,32 @@
+<?php
+
+/**
+* @version $Id: strspn.php,v 1.1 2006/02/25 13:50:17 harryf Exp $
+* @package utf8
+* @subpackage strings
+*/
+
+/**
+* UTF-8 aware alternative to strspn
+* Find length of initial segment matching mask
+* Note: requires utf8_strlen and utf8_substr (if start, length are used)
+* @param string
+* @return int
+* @see http://www.php.net/strspn
+* @package utf8
+* @subpackage strings
+*/
+function utf8_strspn($str, $mask, $start=null, $length=null)
+{
+	$mask = preg_replace('!([\\\\\\-\\]\\[/^])!', '\\\${1}', $mask);
+
+	if (!is_null($start)|| !is_null($length))
+		$str = utf8_substr($str, $start, $length);
+
+	preg_match('/^['.$mask.']+/u', $str, $matches);
+
+	if (isset($matches[0]))
+		return utf8_strlen($matches[0]);
+
+	return 0;
+}