本文介绍了PHP获取标签之间的字符串[一个字符串中的多个标签]的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
I've been searching a lot but i cannot find anything similar to my problem. I've found this link but i don't think they really answered the question.
Let say i have this string
$my_string = "I am with a [id]123[/id] and [id]456[id]";
I want to get all the number between [id][/id]. I only have this function to get the string between.
function get_string_between($string, $start, $end){
$string = ' ' . $string;
$ini = strpos($string, $start);
if ($ini == 0) return '';
$ini += strlen($start);
$len = strpos($string, $end, $ini) - $ini;
return substr($string, $ini, $len);
}
$fullstring = 'I am with a [id]123[/id] and [id]456[id]';
$parsed = get_string_between($fullstring, '[id]', '[/id]');
But this function only returns the first string found on $fullstring. Maybe i can get 123,456 or in array form array('123','456'). I really am stuck with this.
解决方案
You can simply use preg_match_all function of the PHP along with following regex
~[id](.*?)[/id]~
like as
$my_string = "I am with a [id]123[/id] and [id]456[/id]";
preg_match_all("~[id](.*?)[/id]~",$my_string,$m);
print_r($m[1]);
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