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run code in 150+ php & hhvm versions
Bugs & Features
<?php $option = 'maxFileSize'; preg_match_all( '#((?:^|[A-Z])[a-z]+)#', $option, $matches ); if ( isset( $matches[1] ) && strlen( strtolower( implode( '_', $matches[1] ) ) ) >= strlen( $option ) ) { $option = strtolower( implode( '_', $matches[1] ) ); } var_dump( $matches );
Output for 4.3.0 - 7.1.0
array(2) { [0]=> array(3) { [0]=> string(3) "max" [1]=> string(4) "File" [2]=> string(4) "Size" } [1]=> array(3) { [0]=> string(3) "max" [1]=> string(4) "File" [2]=> string(4) "Size" } }