3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $values = array( 0, 1, '1', 1.00, 1.01, 2.33, 3.445, -3.45 ); foreach($values as $value) { $regexp = '/^(-)?[0-9]+\.[0-9][0-9]?$/'; preg_match_all($regexp, $value, $matches); var_dump($matches); }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [0]=> array(0) { } [1]=> array(0) { } } array(2) { [0]=> array(0) { } [1]=> array(0) { } } array(2) { [0]=> array(0) { } [1]=> array(0) { } } array(2) { [0]=> array(0) { } [1]=> array(0) { } } array(2) { [0]=> array(1) { [0]=> string(4) "1.01" } [1]=> array(1) { [0]=> string(0) "" } } array(2) { [0]=> array(1) { [0]=> string(4) "2.33" } [1]=> array(1) { [0]=> string(0) "" } } array(2) { [0]=> array(0) { } [1]=> array(0) { } } array(2) { [0]=> array(1) { [0]=> string(5) "-3.45" } [1]=> array(1) { [0]=> string(1) "-" } }