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@ 2013-07-02T01:24:01Z

<?php
preg_match_all("/.*(user1).*(user2).*(user3).*(user4).*(user5).*/", "user1  user2  user3  user4 <> user5", $matches);
echo "<pre>";
print_r($matches);
echo "</pre>";

Output
Performance
VLD
References
Branches

print_r: documentation ( source)
preg_match_all: documentation ( source)

preferences:dark modelive preview

53.57 ms | 402 KiB | 5 Q