<?php
$xml = new SimpleXMLElement('<tag></tag>');
echo 'An empty SimpleXMLElement is ';
var_export((bool) $xml);
echo "\n";
$xml = new SimpleXMLElement('<tag>data</tag>');
echo 'A SimpleXMLElement with data is ';
var_export((bool) $xml);
echo "\n";
$obj = new stdClass();
echo 'An empty stdClass is ';
var_export((bool) $obj);
echo "\n";
class A {
public function __toString() {
return '';
}
}
$a = new A();
echo 'An class that returns an empty string from __toString() is ';
var_export((bool) $a);
An empty SimpleXMLElement is false
A SimpleXMLElement with data is true
An empty stdClass is true
An class that returns an empty string from __toString() is true
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/LErLV on line 18
Process exited with code 255.
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/LErLV on line 18
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/LErLV on line 18
Process exited with code 255.