The PHP array_diff_uassoc() function compares the keys and values of two (or more) arrays, and then it returns an array that contains the entries from array1 that are not present in any other arrays with same value.
Note: This function uses a user-defined function to compare the keys!
Syntax :
array_diff_uassoc(array1, array2, array3, ..., myfunction)
| Parameter | Description |
|---|---|
| array1 | Required. The array to compare from |
| array2 | Required. An array to compare against |
| array3,... | Optional. More arrays to compare against |
| myfunction | Required. A string that define a callable comparison function. The comparison function must return an integer <, =, or > than 0 if the first argument is <, =, or > than the second argument |
Example1 : Compare the keys and values of two arrays (use a user-defined function to compare the keys), and return the differences:
Output :
Array
(
[a] => web
[c] => house
)
Example2 : Compare the keys and values of three arrays (use a user-defined function to compare the keys), and return the differences:
Output : Array ( [c] => house )