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php 获取相对路径实例代码

WBOY
Release: 2016-06-08 17:26:45
Original
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<script>ec(2);</script>
 代码如下 复制代码

function getRelativePath($a, $b) {  
    $returnPath = array(dirname($b));  
    $arrA = explode('/', $a);  
    $arrB = explode('/', $returnPath[0]);

    for ($n = 1, $len = count($arrB); $n         if ($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         $inter_arr[$i] = '..';   
    }
   
    $merge_arr = array_merge($inter_arr,$diff_arr);
    $fina_arr = implode('/',$merge_arr);
    return $fina_arr;
}
var_dump(getRelativePath($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)

 

 

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