(PHP)正则表达式-preg_grep函数用法

<?php
/**
 * Created by PhpStorm.
 * User: Ollydebug
 * Date: 2015/11/13
 * Time: 22:55
 */

//阉割版preg_filter
//preg_grep函数只会去做匹配的操作，不做替换

$pattern = '/[0-9]/';
$subject = array('weuy','r3ui','76as83','s','0ck9');

$arr = preg_grep($pattern,$subject);

show($arr);

function show($var){
    if(empty($var)){
        echo 'null';
    }elseif(is_array($var)||is_object($var)){
        // array,object
        echo '<pre>';
        print_r($var);
        echo '</pre>';
    }else{
        //string,int,float
        echo $var;
    }
}

?>

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