Compare the key names and key values of two arrays (using a user-defined function for comparison) and return the intersection:
<?phpfunction myfunction_key($a,$b){if ($a===$b) { return 0; } return ($a>$b)?1:-1;}function myfunction_value($a,$b ){if ($a===$b) { return 0; } return ($a>$b)?1:-1;}$a1=array("a"=>"red","b"=>"green","c"=>"blue");$a2= array("a"=>"red","b"=>"green","c"=>"g reen");$result=array_uintersect_uassoc($a1,$a2,"myfunction_key","myfunction_value");print_r($result);?>The array_uintersect_uassoc() function is used to compare the key names and key values of two (or more) arrays and return the intersection.
Note: This function uses two user-defined functions for comparison; the first function compares key names, and the second function compares key values!
This function compares the keys and values of two (or more) arrays and returns an intersection array that includes everything in the compared array ( array1 ), as well as any other argument arrays ( array2 or array3 etc.) in the key name and key value.
array_uintersect_uassoc( array1,array2,array3...,myfunction_key,myfunction_value )
| parameter | describe |
|---|---|
| array1 | Required. The first array to compare with other arrays. |
| array2 | Required. The array to compare to the first array. |
| array3,... | Optional. Additional array to compare with the first array. |
| myfunction_key | Required. The name of the user-defined function used to compare array key names. A string that defines a callable comparison function. If the first parameter <, =, > the second parameter, the corresponding comparison function must return an integer <, =, > 0. |
| myfunction_value | Required. The name of the user-defined function used to compare array key values. A string that defines a callable comparison function. If the first parameter <, =, > the second parameter, the corresponding comparison function must return an integer <, =, > 0. |
| Return value: | Returns an intersection array containing all keys and values in the compared array ( array1 ) and any other parameter arrays ( array2 or array3 , etc.). |
|---|---|
| PHP version: | 5+ |