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--TEST-- Pass uninitialised objects and arrays by reference to test implicit initialisation. --FILE-- <?php function refs(&$ref1, &$ref2, &$ref3, &$ref4, &$ref5) { $ref1 = "Ref1 changed"; $ref2 = "Ref2 changed"; $ref3 = "Ref3 changed"; $ref4 = "Ref4 changed"; $ref5 = "Ref5 changed"; } class C { function __construct(&$ref1, &$ref2, &$ref3, &$ref4, &$ref5) { $ref1 = "Ref1 changed"; $ref2 = "Ref2 changed"; $ref3 = "Ref3 changed"; $ref4 = "Ref4 changed"; $ref5 = "Ref5 changed"; } function refs(&$ref1, &$ref2, &$ref3, &$ref4, &$ref5) { $ref1 = "Ref1 changed"; $ref2 = "Ref2 changed"; $ref3 = "Ref3 changed"; $ref4 = "Ref4 changed"; $ref5 = "Ref5 changed"; } } echo "\n ---- Pass uninitialised array & object by ref: function call ---\n"; unset($u1, $u2, $u3, $u4, $u5); refs($u1[0], $u2[0][1], $u3->a, $u4->a->b, $u5->a->b->c); var_dump($u1, $u2, $u3, $u4, $u5); echo "\n ---- Pass uninitialised arrays & objects by ref: static method call ---\n"; unset($u1, $u2, $u3, $u4, $u5); C::refs($u1[0], $u2[0][1], $u3->a, $u4->a->b, $u5->a->b->c); var_dump($u1, $u2, $u3, $u4, $u5); echo "\n\n---- Pass uninitialised arrays & objects by ref: constructor ---\n"; unset($u1, $u2, $u3, $u4, $u5); $c = new C($u1[0], $u2[0][1], $u3->a, $u4->a->b, $u5->a->b->c); var_dump($u1, $u2, $u3, $u4, $u5); echo "\n ---- Pass uninitialised arrays & objects by ref: instance method call ---\n"; unset($u1, $u2, $u3, $u4, $u5); $c->refs($u1[0], $u2[0][1], $u3->a, $u4->a->b, $u5->a->b->c); var_dump($u1, $u2, $u3, $u4, $u5); ?> --EXPECTF-- ---- Pass uninitialised array & object by ref: function call --- array(1) { [0]=> string(12) "Ref1 changed" } array(1) { [0]=> array(1) { [1]=> string(12) "Ref2 changed" } } object(stdClass)#%d (1) { ["a"]=> string(12) "Ref3 changed" } object(stdClass)#%d (1) { ["a"]=> object(stdClass)#%d (1) { ["b"]=> string(12) "Ref4 changed" } } object(stdClass)#%d (1) { ["a"]=> object(stdClass)#%d (1) { ["b"]=> object(stdClass)#%d (1) { ["c"]=> string(12) "Ref5 changed" } } } ---- Pass uninitialised arrays & objects by ref: static method call --- Strict Standards: Non-static method C::refs() should not be called statically in %s on line 39 array(1) { [0]=> string(12) "Ref1 changed" } array(1) { [0]=> array(1) { [1]=> string(12) "Ref2 changed" } } object(stdClass)#%d (1) { ["a"]=> string(12) "Ref3 changed" } object(stdClass)#%d (1) { ["a"]=> object(stdClass)#%d (1) { ["b"]=> string(12) "Ref4 changed" } } object(stdClass)#%d (1) { ["a"]=> object(stdClass)#%d (1) { ["b"]=> object(stdClass)#%d (1) { ["c"]=> string(12) "Ref5 changed" } } } ---- Pass uninitialised arrays & objects by ref: constructor --- array(1) { [0]=> string(12) "Ref1 changed" } array(1) { [0]=> array(1) { [1]=> string(12) "Ref2 changed" } } object(stdClass)#%d (1) { ["a"]=> string(12) "Ref3 changed" } object(stdClass)#%d (1) { ["a"]=> object(stdClass)#%d (1) { ["b"]=> string(12) "Ref4 changed" } } object(stdClass)#%d (1) { ["a"]=> object(stdClass)#%d (1) { ["b"]=> object(stdClass)#%d (1) { ["c"]=> string(12) "Ref5 changed" } } } ---- Pass uninitialised arrays & objects by ref: instance method call --- array(1) { [0]=> string(12) "Ref1 changed" } array(1) { [0]=> array(1) { [1]=> string(12) "Ref2 changed" } } object(stdClass)#%d (1) { ["a"]=> string(12) "Ref3 changed" } object(stdClass)#%d (1) { ["a"]=> object(stdClass)#%d (1) { ["b"]=> string(12) "Ref4 changed" } } object(stdClass)#%d (1) { ["a"]=> object(stdClass)#%d (1) { ["b"]=> object(stdClass)#%d (1) { ["c"]=> string(12) "Ref5 changed" } } }