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run code in 150+ php & hhvm versions
Bugs & Features
<?php echo "Numeric strings will be converted into an integer\n"; var_dump(array( 1 => 1, '1' => '1', 's1' => 's1', )); echo "Booleans will be converted into an integer:\n"; var_dump(array( 0 => 0, 1 => 1, true => true, false => false, )); echo "NULL will be converted into an empty string:\n"; var_dump(array( '' => '', null => null, )); echo "A resource will be converted into an integer:\n"; var_dump(array( new stdClass => 'new stdClass', ));
Output for 4.3.9 - 7.1.0
Numeric strings will be converted into an integer array(2) { [1]=> string(1) "1" ["s1"]=> string(2) "s1" } Booleans will be converted into an integer: array(2) { [0]=> bool(false) [1]=> bool(true) } NULL will be converted into an empty string: array(1) { [""]=> NULL } A resource will be converted into an integer: Warning: Illegal offset type in /in/UhMaE on line 26 array(0) { }
Output for 4.3.2 - 4.3.8
Numeric strings will be converted into an integer array(2) { [1]=> string(1) "1" ["s1"]=> string(2) "s1" } Booleans will be converted into an integer: array(2) { [0]=> bool(false) [1]=> bool(true) } NULL will be converted into an empty string: array(1) { [""]=> NULL } A resource will be converted into an integer: array(0) { }
Output for 4.3.0 - 4.3.1
Numeric strings will be converted into an integer array(2) { [1]=> string(1) "1" ["s1"]=> string(2) "s1" } Booleans will be converted into an integer: array(2) { [0]=> int(0) [1]=> int(1) } NULL will be converted into an empty string: array(1) { [""]=> NULL } A resource will be converted into an integer: array(0) { }