数组关联问题.

[红尘无爱]

Path=0,242375-0,243641-0,24360-0,420-35476,1-35478,2-35479,3-35473,19-35474

我想得到 420-35476,1-35478,2-35479

并让它变成

array(
35476=>420
35478=>1
35479=>2

);

[小温LLT]

<?php $str="420-35476,1-35478,2-35479"; $zhengze="/(\d+)-(\d+)/"; preg_match_all($zhengze,$str,$result); $arr=array_combine($result[2],$result[1]);

[小温LLT]

使用正则表达式 轻松解决

[好好学习,天天向上]

$str = "Path=0,242375-0,243641-0,24360-0,420-35476,1-35478,2-35479,3-35473,19-35474";
	    $arrRes = explode(',',$str);
	    foreach( $arrRes AS $val ){
            if( strpos($val,'-') ){
                $tmpArr = explode('-',$val);
                if( is_array($tmpArr) ){
                    $num1 = intval($tmpArr[0]);
                    $num2 = intval($tmpArr[1]);
                    echo $num1.'<br />'.$num2.'<br />';
                    if( in_array( $num2,array(35476,35478,35479)) ){
                        $newArr[$num2]=$num1;
                    }
                }
            }
        }
	    echo '<pre />';
	    print_r($newArr);die;