Online PHP editor | output for Fabdk

@ 2015-10-27T15:37:15Z

<?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){
    $a = var_export($val);
    var_dump($a);
    /*
    echo str_pad(print($val), PAD), " | ";
    echo $val ? $x : $y;
    echo isset($val) ? $x : $y;
    echo empty($val) ? $x : $y;
    echo is_null($val) ? $x : $y;
    */
    echo "\n";
}

Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: ''NULL ' 'NULL falseNULL trueNULL array ( )NULL NULLNULL '0'NULL 0NULL 0.0NULL (object) array( )NULL \Foo::__set_state(array( 'bar' => NULL, ))NULL NULLNULL '' . "\0" . ''NULL
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28: ''NULL ' 'NULL falseNULL trueNULL array ( )NULL NULLNULL '0'NULL 0NULL 0.0NULL (object) array( )NULL Foo::__set_state(array( 'bar' => NULL, ))NULL NULLNULL '' . "\0" . ''NULL
Output for 7.0.2 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33: ''NULL ' 'NULL falseNULL trueNULL array ( )NULL NULLNULL '0'NULL 0NULL 0.0NULL stdClass::__set_state(array( ))NULL Foo::__set_state(array( 'bar' => NULL, ))NULL NULLNULL '' . "\0" . ''NULL
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.1: ''NULL ' 'NULL falseNULL trueNULL array ( )NULL NULLNULL '0'NULL 0NULL 0NULL stdClass::__set_state(array( ))NULL Foo::__set_state(array( 'bar' => NULL, ))NULL NULLNULL '' . "\0" . ''NULL

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