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array_intersect_assoc() calculates the intersection of arrays with index checking
【Function】This function will return an array,
This array contains all values in array1 that are not in any other parameter array.
Note that unlike the array_intersect() function, key names are also used for comparison.
【Scope of use】
php4>=4.3.0, php5.
【Use】
array array_intersect_assoc( array array1, array array2[,array...] )
array1/required/array1
array2/required/comparable array must have at least one
array.../optional/array used for comparison
【Example】
[php]
//Define two arrays respectively
$array1 = array( "blue" => 6, "red" => 2, "green" => 3, "purple" => 4 );
$array2 = array( "green"=>5 , "blue" => 6, "yellow" => 7, "cyan" => 8 );
print_r( array_intersect_assoc( $array1, $array2 ) );
/*
Array
(
[blue] => 6
)
*/
Excerpted from zuodefeng’s notes