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/*********************************************************
describe£º×Ö·û´®´¦Àí,¿ÉÒÔ´¦ÀíÖÐÓ¢ÎÄ
function£ºÏòÒ»¸ö×Ö·û´®Ëæ»úÌí¼ÓÎÄ×Ö
author£º etongchina
email2me: etongchina@gmail.com
time£º 2008-06-24
blog£º http://etongchina.blogcn.com
*********************************************************/
function getStrlen($str){
$_count = array();
$count = 0;
for($count;$count<strlen($str);){
ord($str{$i})>127?$count+=2:$count++;
$_count[] = $count; //ÓÃÊý×é´æ´¢¿ÉÄܲåÈëµÄλÖÃ
}
$_key = array_rand($_count); //´ÓÊý×éÖлñÈ¡Ëæ»ú¼ü
return $_count[$_key];
}
$str = "ΰ´ó׿¹ú·±ÈÙ¸»Ç¿"; //Ô´×Ö·û´®
$insert_str = "-"; //´ýÌí¼ÓµÄÎÄ×Ö
$_rand = getStrlen($str); //Ö÷º¯Êý
$_exp = "/^(.{".$_rand."})(.*)$/i"; //ÕýÔò±í´ïʽ
$t = preg_replace($_exp,"$1{$insert_str}$2",$str);
print $t;
?>
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