3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $replacements = array( '[PEDIDO]' => 123, '[NOME]' => 'Bruno Augusto', '[VALOR]' => 69.00, '[FRETE]' => 0, '[DESCONTO]' => 69.00, '[TOTAL]' => 'It\'s FREE!', ); //$msg = preg_replace( '/\[\w+\]/', ); var_dump( array_map( 'preg_quote', array_keys( $replacements ) ) );
based on taSu7
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(6) { [0]=> string(10) "\[PEDIDO\]" [1]=> string(8) "\[NOME\]" [2]=> string(9) "\[VALOR\]" [3]=> string(9) "\[FRETE\]" [4]=> string(12) "\[DESCONTO\]" [5]=> string(9) "\[TOTAL\]" }