在php中使用正则表达式拆分字符串

$test = 'http://localhost/biochem/wp-content/uploads//godzilla-article2.jpghttp://localhost/biochem/wp-content/uploads/life-goes-on-wpcf_300x111.jpg';
$testurls = explode('http://',$test);
foreach ($testurls as $testurl) {
    if (strlen($testurl)) // because the first item in the array is an empty string
    $urls[] = 'http://'. $testurl;
}
print_r($urls);

你要求一个正则表达式的解决方案，所以你在这里…

$test = "http://localhost/biochem/wp-content/uploads//godzilla-article2.jpghttp://localhost/biochem/wp-content/uploads/life-goes-on-wpcf_300x111.jpg";
preg_match_all('/(http:'/'/.+?'.jpg)/',$test,$matches);
print_r($matches[0]);

表达式查找字符串中以http://开始和以.jpg结束的部分，以及介于两者之间的任何内容。这将完全按照要求拆分字符串。

Array
(
    [0] => http://localhost/biochem/wp-content/uploads//godzilla-article2.jpg
    [1] => http://localhost/biochem/wp-content/uploads/life-goes-on-wpcf_300x111.jpg
)

如果它们总是这样，可以使用substr()函数参考:http://php.net/manual/en/function.substr.php拆分它们，但如果它们是动态长度。你需要得到一个;或任何其他标志，不太可能在第二次"http://"之前使用，然后使用爆炸功能参考:http://php.net/manual/en/function.explode.php$string = "http://something.com/;http://something2.com"; $a = explode(";",$string);

尝试如下:

<?php
$temp = explode('http://', $test);
foreach($temp as $url) {
    $urls[] = 'http://' . $url;
}
print_r($urls);
?>

$test = 'http://localhost/biochem/wp-content/uploads//godzilla-article2.jpghttp://localhost/biochem/wp-content/uploads/life-goes-on-wpcf_300x111.jp';
array_slice(
    array_map(
        function($item) { return "http://" . $item;}, 
        explode("http://",  $test)), 
    1);

对于用正则表达式回答这个问题，我认为您需要这样做:

$test = "http://localhost/biochem/wp-content/uploads//godzilla-article2.jpghttp://localhost/biochem/wp-content/uploads/life-goes-on-wpcf_300x111.jpg";
    $keywords = preg_split("/.http:'/'//",$test);
    print_r($keywords);

它返回你需要的东西:

Array
(
 [0] => http://localhost/biochem/wp-content/uploads//godzilla-article2.jp
 [1] => localhost/biochem/wp-content/uploads/life-goes-on-wpcf_300x111.jpg
)