Question

使用 preg_ match, 您可以使用 , 它会添加到输出数组中。

使用 preg_ replace, 我想匹配一个URL, 例如 , “ http://< url> s" , 然后在替换字符串中保存该URl, 比如在 Theurl< url> 之后。

Answer 1

以下是我评论的一个例子:

<?php

$result = preg_replace("/(matched)/",  before$1after , "matched");

echo $result;

输出: 先于

http://codepad.org/panzOm6c

Answer 2

在替换字符串中使用 < a href=> "http://php.net/ manual/en/regexm. reference.back- references.php" rel=“nofollow” > backerence reference 。

echo preg_replace( #http://(w+).*$# ,  sld = $1 ,  http://mysite.com );

// output: sld = mysite

更多来自",http://us.php.net/manual/en/formation.preg-replace.php" rel="nofollow" > manual :

replacement may contain references of the form or (since PHP 4.0.4) $n, with the latter form being the preferred one. Every such reference will be replaced by the text captured by the n th parenthesized pattern. n can be from 0 to 99, and or $0 refers to the text matched by the whole pattern. Opening parentheses are counted from left to right (starting from 1) to obtain the number of the capturing subpattern. To use backslash in replacement, it must be doubled ("\" PHP string).

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