php截取特定字符前面后面中间的内容

2020-08-31T20:08:00
<?php
$text = "123456789";
//保存一段文字
echo substr($text,strripos($text,"5")+1);
//输出5之后内容
echo substr($text,0,strrpos($text,"5"));
//输出5之前内容
echo substr(substr($text,0,strrpos($text,"8")),strripos(substr($text,0,strrpos($text,"8")),"5")+1);
//输出5之后8之前的内容
?>


<?php
preg_match('/.*?<p>(\d*?)<\/p>.*?/', "<p>www.gmit.vip</p>", $res);
echo $res;
//输出 www.gmit.vip
?>
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