3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $values = array( 0, 1, '1', 1.0, 2.33, 3.445 -3.45 ); foreach($values as $value) { $regexp = '/^[0-9]+(\.[0-9][0-9]?)?$/'; preg_match($regexp, $value, $matches); var_dump($matches); }
Output for 4.3.0 - 7.1.0
array(1) { [0]=> string(1) "0" } array(1) { [0]=> string(1) "1" } array(1) { [0]=> string(1) "1" } array(1) { [0]=> string(1) "1" } array(2) { [0]=> string(4) "2.33" [1]=> string(3) ".33" } array(0) { }