(PHP 5 >= 5.1.0, PHP 7)
array_intersect_ukey — Computes the intersection of arrays using a callback function on the keys for comparison
$array1
, array $array2
[, array $...
], callable $key_compare_func
) : array
array_intersect_ukey() returns an array
containing all the values of array1
which have matching keys that are present in all the arguments.
array1Initial array for comparison of the arrays.
array2First array to compare keys against.
...Variable list of array arguments to compare keys against.
key_compare_funcFuncția de comparare trebuie să întoarcă un întreg mai mic, egal cu sau mai mare decât zero dacă primul argument este considerat respectiv mai mic, egal cu sau mai mare decât al doilea argument.
Returns the values of array1 whose keys exist
in all the arguments.
Example #1 array_intersect_ukey() example
<?php
function key_compare_func($key1, $key2)
{
if ($key1 == $key2)
return 0;
else if ($key1 > $key2)
return 1;
else
return -1;
}
$array1 = array('blue' => 1, 'red' => 2, 'green' => 3, 'purple' => 4);
$array2 = array('green' => 5, 'blue' => 6, 'yellow' => 7, 'cyan' => 8);
var_dump(array_intersect_ukey($array1, $array2, 'key_compare_func'));
?>
Exemplul de mai sus va afișa:
array(2) {
["blue"]=>
int(1)
["green"]=>
int(3)
}
In our example you see that only the keys 'blue'
and 'green' are present in both arrays and thus
returned. Also notice that the values for the keys
'blue' and 'green' differ between
the two arrays. A match still occurs because only the keys are checked.
The values returned are those of array1.