php check if a value exists in array

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PHP in_array() The function checks whether a certain value exists in the array. If it exists, it returns TRUE, otherwise it returns FALSE.

Syntax:

bool in_array( mixed needle, array array [, bool strict] )

Parameter description:

Example:

Character a exists in $arr_a array Strictly checked example:

Character 1 in $ Example of array as needle does not exist in arr_a array:

array$arr_b exists in $arr_a array

PHP in_array() The function checks whether a certain value exists in the array. If it exists, it returns TRUE, otherwise it returns FALSE.

Syntax:

bool in_array( mixed needle, array array [, bool strict] )

Parameter description:

Example:

Character a exists in the $arr_a array Strictly checked example:

Character 1 in $ Example of array as needle does not exist in arr_a array:

array$arr_b exists in $arr_a array

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