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implicit_instantiation_001.phpt
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Tue May 29 12:34:34 2012 UTC (12 years, 10 months ago) by
misho
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MAIN
CVS tags:
v5_4_3elwix,
v5_4_29p0,
v5_4_29,
v5_4_20p0,
v5_4_20,
v5_4_17p0,
v5_4_17,
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php 5.4.3+patches
--TEST--
Implicit object instantiation when accessing properties of non-object.
--FILE--
<?php
class C {
// These values get implicitly converted to objects
public $boolFalse = false;
public $emptyString = '';
public $null = null;
// These values do not get implicitly converted to objects
public $boolTrue = true;
public $nonEmptyString = 'hello';
public $intZero = 0;
}
$c = new C;
foreach($c as $name => $value) {
echo "\n\n---( \$c->$name )---";
echo "\n --> Attempting implicit conversion to object using increment...\n";
$c->$name->prop++;
$c->$name = $value; // reset value in case implicit conversion was successful
echo "\n --> Attempting implicit conversion to object using assignment...\n";
$c->$name->prop = "Implicit instantiation!";
$c->$name = $value; // reset value in case implicit conversion was successful
echo "\n --> Attempting implicit conversion to object using combined assignment...\n";
$c->$name->prop .= " Implicit instantiation!";
}
echo "\n\n\n --> Resulting object:";
var_dump($c);
?>
--EXPECTF--
---( $c->boolFalse )---
--> Attempting implicit conversion to object using increment...
Warning: Creating default object from empty value in %s on line 18
--> Attempting implicit conversion to object using assignment...
Warning: Creating default object from empty value in %s on line 22
--> Attempting implicit conversion to object using combined assignment...
Warning: Creating default object from empty value in %s on line 26
---( $c->emptyString )---
--> Attempting implicit conversion to object using increment...
Warning: Creating default object from empty value in %s on line 18
--> Attempting implicit conversion to object using assignment...
Warning: Creating default object from empty value in %s on line 22
--> Attempting implicit conversion to object using combined assignment...
Warning: Creating default object from empty value in %s on line 26
---( $c->null )---
--> Attempting implicit conversion to object using increment...
Warning: Creating default object from empty value in %s on line 18
--> Attempting implicit conversion to object using assignment...
Warning: Creating default object from empty value in %s on line 22
--> Attempting implicit conversion to object using combined assignment...
Warning: Creating default object from empty value in %s on line 26
---( $c->boolTrue )---
--> Attempting implicit conversion to object using increment...
Warning: Attempt to %s property of non-object in %s on line 18
--> Attempting implicit conversion to object using assignment...
Warning: Attempt to assign property of non-object in %s on line 22
--> Attempting implicit conversion to object using combined assignment...
Warning: Attempt to assign property of non-object in %s on line 26
---( $c->nonEmptyString )---
--> Attempting implicit conversion to object using increment...
Warning: Attempt to %s property of non-object in %s on line 18
--> Attempting implicit conversion to object using assignment...
Warning: Attempt to assign property of non-object in %s on line 22
--> Attempting implicit conversion to object using combined assignment...
Warning: Attempt to assign property of non-object in %s on line 26
---( $c->intZero )---
--> Attempting implicit conversion to object using increment...
Warning: Attempt to %s property of non-object in %s on line 18
--> Attempting implicit conversion to object using assignment...
Warning: Attempt to assign property of non-object in %s on line 22
--> Attempting implicit conversion to object using combined assignment...
Warning: Attempt to assign property of non-object in %s on line 26
--> Resulting object:object(C)#%d (6) {
[%u|b%"boolFalse"]=>
object(stdClass)#%d (1) {
[%u|b%"prop"]=>
%unicode|string%(24) " Implicit instantiation!"
}
[%u|b%"emptyString"]=>
object(stdClass)#%d (1) {
[%u|b%"prop"]=>
%unicode|string%(24) " Implicit instantiation!"
}
[%u|b%"null"]=>
object(stdClass)#%d (1) {
[%u|b%"prop"]=>
%unicode|string%(24) " Implicit instantiation!"
}
[%u|b%"boolTrue"]=>
bool(true)
[%u|b%"nonEmptyString"]=>
%unicode|string%(5) "hello"
[%u|b%"intZero"]=>
int(0)
}
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