Question

嘿我正在尝试做2个preg_replace： 1.将所有网址添加到HTML链接 2.将所有图片网址添加到html img标记

但是这些正则表达式取消了另一个

<?php
// The Regular Expression filter
$reg_exUrl = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
$reg_exImg = "!http://[a-z0-9\-\.\/]+\.(?:jpe?g|png|gif)!Ui";

// The Text you want to filter for urls
$text = "The text you want to filter goes here. http://google.comhttp://www.ynet.co.il http://dogsm.files.wordpress.com/2011/12/d7a1d7a7d795d791d799-d793d795.jpg";

// Check if there is a url in the text
    $text = preg_replace($reg_exImg, '<img src=$0 >', $text);
    $text = preg_replace($reg_exUrl, '<a href="$0" rel="nofollow">$0</a>', $text);
    echo $text;
?>

如何使链接url的preg_replace不执行此操作？

感谢。

Haim的

Answer 1

这可能更适合作为回调。

仅使用$reg_exUrl，然后执行此操作：

$text = preg_replace_callback($reg_exUrl,function($m) {
    if( preg_match("/\.(?:jpe?g|png|gif)$/i",$m[0])) {
        return "<img src='".$m[0]."' />";
    }
    else {
        return "<a href='".$m[0]."' rel='nofollow'>".$m[0]."</a>";
    }
},$text);

PHP preg_replace多个url替换

1 个答案: