PHP html tag finding

Question

Any one can help me in finding any tag present in text as html format.

Ex: $text="<a href>the hero</a>";

find "<a" is present in $text or not in php.

You want to know if there are tags in your string? remove the tags? or know which tags are there? Depending on your answer, the real answer will be different — Mathieu Dumoulin, Jan 11 '12 at 21:43
Somewhat to the point: http://www.codinghorror.com/blog/2009/11/parsing-html-the-cthulhu-way.html — Wrikken, Jan 11 '12 at 21:45

score 1 · Answer 1 · answered Jan 11 '12 at 22:36

1

If you simply want to check for the presence of "<a" in a string use strpos. It is much faster than preg_* which must first compile a regular expression.

<?php
$exists = (strpos($text , '<a') !== false);
?>

answered Jan 11 '12 at 22:36

AlexanderZ

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score 0 · Answer 2 · edited May 23 '17 at 10:24

0

For parsing HTML is best to use some kind of DOM parser, more info here: PHP HTML DOM Parser, but if your goal is only to check existence of html tag, preg_match can be the solution:

$text="<a href>the hero</a>";
var_dump(preg_match("/\<a.*\>(.*?)\<\/a\>/si", $text));

edited May 23 '17 at 10:24

Community

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1

answered Jan 11 '12 at 21:49

Peter Krejci

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score -2 · Answer 3 · edited Jan 11 '12 at 21:52

-2

Maybe:

if(str_replace("<a", "<a", $text)) {
    echo "ok";
} else {
    echo "not ok";
}

See the manual for str_replace.

edited Jan 11 '12 at 21:52

Ry-

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answered Jan 11 '12 at 21:44

clement

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You are doing unnecessarily job using `str_replace` - replacing string with the same string. Using such construction decreases code readability. – Peter Krejci Jan 11 '12 at 21:54

PHP html tag finding

3 Answers3