Description:
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http://nl2.php.net/array_unshift

The page gives the following syntax for this function:

int array_unshift  ( array $array  , mixed $var  [, mixed $ ...  ] )

However, the first parameter should be given 'by reference', according to the english manual.

Correct syntax (added &):

int array_unshift  ( array &$array  , mixed $var  [, mixed $ ...  ] )

Reproduce code:
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Irrelevant

Expected result:
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Irrelevant

Actual result:
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Irrelevant