(PHP) The use of regular Expressions-preg_match and Preg_match_all ()

<?php/** * Regular Expression Exercise * user:ollydebug * DATE:2015/11/13 * time:13:28 *//* * Preg_match () The third parameter is optional, the third argument is a reference pass, which matches the subject , it will only match once * Preg_match_all () The third parameter is required, and the third parameter is a reference pass, which matches all the conditions of the subject when it matches the result */$pattern = '/[0-9]/'; $subject = ' Weuyr3ui76as83s0ck9 '; $m 1 = $m 2 = Array (), $t 1 = Preg_match ($pattern, $subject, $m 1); $t 2 = Preg_match_all ($pattern, $ Subject, $m 2); Show ($m 1); Echo '  
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