PHP Array function-array_diff ()

The Array_diff () function returns an array of difference sets for two arrays. The array includes all the key values in the array being compared, but not in any other parameter array, and the key name remains unchanged in the returned array. Array_diff (Array1,array2,array3 ...); Array1: Required. The first array to compare with the other array. Array2: Required. The array to compare with the first array. ARRAY3: Optional. The array to compare with the first array. Note: One or more arrays can be compared to the first array. <?php
$a 1 = array(0=> ' Cat ',1=> ' Dog ',2=> ' Horse ');
$a 2 = array(3=> ' Horse ',4=> ' Dog ',5=> ' Fish ');
Print_r (Array_diff($a 1,$a 2));
?> output: Array ([0] = Cat)

PHP Array function-array_diff ()