int preg_match_all
(string pattern, string subject, array matches [, int
order])
Searches subject for all matches to the regular expression given in pattern and puts them in matches in the order specified by order.
After the first match is found, the subsequent searches are continued on from end of the last match.
order can be one of two things:
Orders results so that $matches[0] is an array of full pattern matches, $matches[1] is an array of strings matched by the first parenthesized subpattern, and so on.
preg_match_all ("|<[^>]+>(.*)</[^>]+>|U", "<b>example: </b><div align=left>this is a test</div>", $out, PREG_PATTERN_ORDER); print $out[0][0].", ".$out[0][1]."\n"; print $out[1][0].", ".$out[1][1]."\n" |
<b>example: </b>, <div align=left>this is a test</div> example: , this is a test |
Orders results so that $matches[0] is an array of first set of matches, $matches[1] is an array of second set of matches, and so on.
preg_match_all ("|<[^>]+>(.*)</[^>]+>|U", "<b>example: </b><div align=left>this is a test</div>", $out, PREG_SET_ORDER); print $out[0][0].", ".$out[0][1]."\n"; print $out[1][0].", ".$out[1][1]."\n" |
<b>example: </b>, example: <div align=left>this is a test</div>, this is a test |
If order is not specified, it is assumed to be PREG_PATTERN_ORDER.
Returns the number of full pattern matches, or false if no match is found or an error occurred.
Example 1. Getting all phone numbers out of some text.
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Example 2. Find matching HTML tags (greedy)
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matched: <b>bold text</b> part 1: <b> part 2: bold text part 3: </b> matched: <a href=howdy.html>click me</a> part 1: <a href=howdy.html> part 2: click me part 3: </a> |
See also preg_match(), preg_replace(), and preg_split().