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run code in 200+ php & hhvm versions
Bugs & Features
<?php class Foo { public $bar; } $foo = new Foo; $arr = array("", " ", FALSE, TRUE, array(), NULL, "0", 0, 0.0, new stdClass, $foo, $foo->bar, "\0"); define('PAD', 20); $headings = array('type', 'if', 'isset', 'empty', 'is_null'); foreach($headings as $heading){ echo str_pad($heading, PAD), " | "; } echo "\n"; $x = str_pad("TRUE", PAD) . " | "; $y = str_pad("", PAD) . " | "; foreach($arr as $val){ echo str_pad(gettype($val) . "(" . $val . ")", PAD), " | "; echo $val ? $x : $y; echo isset($val) ? $x : $y; echo empty($val) ? $x : $y; echo is_null($val) ? $x : $y; echo "\n"; }
based on 6fVHu
Output for 7.1.0 - 7.2.0
type | if | isset | empty | is_null | string() | | TRUE | TRUE | | string( ) | TRUE | TRUE | | | boolean() | | TRUE | TRUE | | boolean(1) | TRUE | TRUE | | | Notice: Array to string conversion in /in/rs0dX on line 15 array(Array) | | TRUE | TRUE | | NULL() | | | TRUE | TRUE | string(0) | | TRUE | TRUE | | integer(0) | | TRUE | TRUE | | double(0) | | TRUE | TRUE | | Recoverable fatal error: Object of class stdClass could not be converted to string in /in/rs0dX on line 15
Process exited with code 255.
Output for 5.4.0 - 7.0.20
type | if | isset | empty | is_null | string() | | TRUE | TRUE | | string( ) | TRUE | TRUE | | | boolean() | | TRUE | TRUE | | boolean(1) | TRUE | TRUE | | | Notice: Array to string conversion in /in/rs0dX on line 15 array(Array) | | TRUE | TRUE | | NULL() | | | TRUE | TRUE | string(0) | | TRUE | TRUE | | integer(0) | | TRUE | TRUE | | double(0) | | TRUE | TRUE | | Catchable fatal error: Object of class stdClass could not be converted to string in /in/rs0dX on line 15
Process exited with code 255.
Output for 5.3.19 - 5.3.29
type | if | isset | empty | is_null | string() | | TRUE | TRUE | | string( ) | TRUE | TRUE | | | boolean() | | TRUE | TRUE | | boolean(1) | TRUE | TRUE | | | array(Array) | | TRUE | TRUE | | NULL() | | | TRUE | TRUE | string(0) | | TRUE | TRUE | | integer(0) | | TRUE | TRUE | | double(0) | | TRUE | TRUE | | Catchable fatal error: Object of class stdClass could not be converted to string in /in/rs0dX on line 15
Process exited with code 255.