php 获取相对路径实例代码

当前位置:

首页 > PHP >

php 获取相对路径实例代码

function getRelativePath($a, $b) {

    $returnPath = array(dirname($b));

    $arrA = explode('/', $a);

    $arrB = explode('/', $returnPath[0]);

    for ($n = 1, $len = count($arrB); $n < $len; $n++) {

        if ($arrA[$n] != $arrB[$n]) {

            break;

        }

    }

    if ($len - $n > 0) {

        $returnPath = array_merge($returnPath, array_fill(1, $len - $n, '..'));

    }



    $returnPath = array_merge($returnPath, array_slice($arrA, $n));

    return implode('/', $returnPath);

}

var_dump(getRelativePath($a, $b));

//方法二

$a = "/a/b/c/d/index.php";

//echo basename($a,'.php');// 返回路径中文件名部分

//echo dirname($a);

$b = "/a/b/12/34/index2.php";

function getRelativePath($path1,$path2){

    $p1 = dirname($path1);

    $p2 = dirname($path2);

    $arr1 = explode('/',$p1);

    $arr2 = explode('/',$p2);

    $diff_arr= array_diff($arr2,$arr1);    //计算差集注意这里是谁相对谁的

    $inter_arr = array_intersect($arr1,$arr2);//计算交集



    $leng = count($inter_arr);    //长度是以交集的为准即求..部分

    for($i=1;$i<$leng;$i++){

        $inter_arr[$i] = '..';

    }



    $merge_arr = array_merge($inter_arr,$diff_arr);

    $fina_arr = implode('/',$merge_arr);

    return $fina_arr;//开源代码phpfensi.com

}

var_dump(getRelativePath($a,$b));

//返回 string '/../../12/34' (length=12)

//如果改成$diff_arr= array_diff($arr1,$arr2); 就返回string '/../../c/d (length=12)

出处：http://www.phpfensi.com/php/20140817/4364.html

栏目列表