Compare the keys of two arrays, and return the differences:
The array_diff_key() function compares the keys of two (or more) arrays, and returns the differences.
This function compares the keys of two (or more) arrays, and return an array that contains the entries from array1 that are not present in array2.
|array1||Required. The array to compare from|
|array2||Required. An array to compare against|
|array3,...||Optional. More arrays to compare against|
|Return Value:||Returns an associative array containing the entries from array1 that are not present in any of the other arrays|
Compare the keys of two associative arrays, and return the differences:
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