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Programming PHP, 3rd Edition by Peter MacIntyre, Kevin Tatroe, Rasmus Lerdorf

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Name

array_search

Synopsis

mixed array_search(mixed value, array array[, bool strict])

Performs a search for a value in an array, as with in_array(). If the value is found, the key of the matching element is returned; NULL is returned if the value is not found. If strict is specified and is true, a matched element is returned only when it is of the same type and value as value.

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