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<? echo preg_match('[0-9a-zA-Z]', 'bob'); echo preg_match('[0-9a-zA-Z]', 'bob'); echo preg_match('[0-9a-zA-Z]', 'bob'); ?>
based on 8HnPk
Output for 5.4.34 - 7.2.0
000
Output for 4.3.0 - 5.4.32
<? echo preg_match('[0-9a-zA-Z]', 'bob'); echo preg_match('[0-9a-zA-Z]', 'bob'); echo preg_match('[0-9a-zA-Z]', 'bob'); ?>