PHP regular expression to extract href address in html hyperlink_PHP tutorial

Sometimes we need to filter or extract external links from HTML strings. Below I will introduce a program that uses PHP regular expressions to extract href addresses in HTML hyperlinks for your reference.

Use PHP's regular expression related functions to extract the address in the html hyperlink .

{

The code is as follows

代码如下	复制代码
$preg='//is'; $str ='URLNAME文本段1URLNAME文本段2URLNAME...文本段n'; preg_match_all($preg,$str,$match);//在$str中搜索匹配所有符合$preg加入$match中 for($i=0;$i { echo $match[1][$i]." "; } ?>

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$preg='//is';

$str ='URLNAMEText 1URLNAMEText 2< a target="_blank" href="Link 3">URLNAME...Text segmentn';

preg_match_all($preg,$str,$match);//Search for all matches in $str that match $preg and add them to $match

代码如下	复制代码
$str=' ';  $pattern="/<[img|IMG].*?src=['|"](.*?(?:[.gif|.jpg]))['|"].*?[/]?>/";  preg_match_all($pattern,$str,$match);  print_r($match);

for($i=0;$i

echo $match[1][$i]."
";

} ?> Final output: Link 1
Link 2
Link 3

Attached is a PHP regular expression code to extract image address.

The code is as follows

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$str=' '; $pattern="/<[img|IMG].*?src=['|"](.*?(?:[.gif|.jpg]))['|"].*?[ /]?>/"; preg_match_all($pattern,$str,$match); print_r($match); http://www.bkjia.com/PHPjc/631538.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631538.htmlTechArticleSometimes we need to filter or extract external links from html strings. Below I will introduce an extraction using PHP regular expressions. The href address program in html hyperlinks, for your reference. The correct way to use php...