Question

它说是错误

我试图让它在 playlist.m3u8？wmsAuthSign = 和＆＃34; 之间抓住我在 mylink之后放置的任何页面.com / file.php？f =无论什么然后然后将放在GETURL代码中的 www.linkhere.com / 之后，这样它就抓住了在 linkhere.com/whatever 页面上的 playlist.m3u8？wmsAuthSign = 和＆＃34; 之间（如果这是有意义的

以下是代码：

<?php
    function getURL($u){
        $u = file_get_contents("http://{$u}");
        return $u != false ? $u : "";
    }
    function GetStringBetween($string, $start, $finish){
        $string = " ".$string;
        $position = strpos($string, $start);
        if ($position == 0) return "";
        $position += strlen($start);
        $length = strpos($string, $finish, $position) - $position;
        return substr($string, $position, $length);
    }
    $stream = GetStringBetween(getURL("www.linkhere.com/<?=!isset($_GET["f"]) ? "filehere.php" : htmlspecialchars($_GET["f"])?>"),"playlist.m3u8?wmsAuthSign=", '"');
?>

Answer 1

<?php
    function getURL($u){
        $u = file_get_contents("http://{$u}");
        return $u != false ? $u : "";
    }
    function GetStringBetween($string, $start, $finish){
        $string = " ".$string;
        $position = strpos($string, $start);
        if ($position == 0) return "";
        $position += strlen($start);
        $length = strpos($string, $finish, $position) - $position;
        return substr($string, $position, $length);
    }


$url = (!isset($_GET["f"])) ? "filehere.php" : htmlspecialchars($_GET["f"]);
$stream = GetStringBetween(getURL("www.linkhere.com/".$url),"playlist.m3u8?wmsAuthSign=", '"');
?>

这样吗？

Answer 2

$url = (!isset($_GET["f"])) ? "filehere.php" : htmlspecialchars($_GET["f"]);
$stream = GetStringBetween(getURL("www.linkhere.com/".$url),"playlist.m3u8?wmsAuthSign=", '"');

Answer 3

不要认为按顺序分解代码是非常有意义的。序列直到你可以在睡觉时编程？此外，将代码分解为步骤可以帮助您更清楚地了解事物并进行学习。随着一个人的进步，人们发现自己甚至在一行中编写了一个复杂的算法（学徒需要30行）...但在那之前......建议学徒从构建块开始，然后建立和甚至以复杂的方式做到这一点（只要简单，漫长，无聊的方式起作用并产生很多洞察力）....

    <?php
        function getURL($u){
            $u        = file_get_contents("http://{$u}");
            return ($u  != false) ? $u : "";
        }

        function GetStringBetween($string, $start, $finish){
            $string      = " ".$string;
            $position    = strpos($string, $start);

            if ($position == 0){ return "";}

            $position  += strlen($start);
            $length     = strpos($string, $finish, $position) - $position;

            return substr($string, $position, $length);
        }

        $f      = ( !isset($_GET["f"]) ) ? "filehere.php" : htmlspecialchars(trim($_GET["f"]);
        $url        = "www.linkhere.com/{$f}";
        $theURI = getURL($url); 

        $stream    = GetStringBetween($theURI,'playlist.m3u8?wmsAuthSign=', '\"');
    ?>

我该如何修复这个PHP代码

3 个答案: