Online PHP editor | output for 0SOe3

@ 2014-09-30T13:04:32Z

<?php
$cosas = array( 
	'true' => TRUE, 
	'false' => FALSE, 
	'null' => NULL, 
	'empty' => "",
	'positive' => 1,
	'negative' => -1,
	'zero' => 0 
);

//$cosas = array_filter($cosas, function($k){ return TRUE; });
foreach($cosas as $nombre => $cosa)
{
	echo "* $nombre\n";
	echo "\tisset:\t" . ( isset($cosa) ? "TRUE" : "FALSE" ) . "\n";
	echo "\ti_null:\t" . ( is_null($cosa) ? "TRUE" : "FALSE" ) . "\n";
	echo "\tempty:\t" . ( empty($cosa) ? "TRUE" : "FALSE" ) . "\n";
	echo "\teval:\t" . ( $cosa ? "TRUE" : "FALSE" ) . "\n\n";
}

Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: * true isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * false isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * null isset: FALSE i_null: TRUE empty: TRUE eval: FALSE * empty isset: TRUE i_null: FALSE empty: TRUE eval: FALSE * positive isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * negative isset: TRUE i_null: FALSE empty: FALSE eval: TRUE * zero isset: TRUE i_null: FALSE empty: TRUE eval: FALSE

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