In the main array, I have:
$array=array('index1'=>'value1', 'index2'=>'value2' , ....);
In another array, I keep the key=>index relationship:
$map=array('key1'=>'index1', 'key2'=>'index2' , ...);
Is there any simple way to combile these two array into one to get:
$combine=array('key1'=>'value1', 'key2'=>'value2', ...);
that is values from main array and keys comes from the map array.
<?php
$array1=array('index1'=>'value1', 'index2'=>'value2');
$array2=array('key1'=>'index1', 'key2'=>'index2');
foreach($array2 as $key => $val){
if(array_key_exists($val,$array1))
$combined[$key] = $array1[$val];
}
// Output
print_r($combined);
?>
Output
Array
(
[key1] => value1
[key2] => value2
)
Loop through the $map array and extract the value for $array accordingly and put them to the $combine array. You can try this -
$array=array('index1'=>'value1', 'index2'=>'value2');
$map=array('key1'=>'index1', 'key2'=>'index2');
$combine = array();
foreach($map as $key => $val) {
$combine[$key] = $array[$val];
}
var_dump($combine);
Output
array(2) {
["key1"]=>
string(6) "value1"
["key2"]=>
string(6) "value2"
}
A possible solution here, if the keys and values already are in the expected order, and you are certain all arrays have the same length, use the array_combine function together with array_keys and array_values
<?php
$array=array('index1'=>'value1', 'index2'=>'value2');
$map=array('key1'=>'index1', 'key2'=>'index2');
$combine = array_combine( array_keys($map), array_values($array) );
print_r($combine);
?>
Output
Array
(
[key1] => value1
[key2] => value2
)
Variant with no own code, only functions. It takes only keys presented in both arrays:
$array=array('index1'=>'value1', 'index2'=>'value2' , 'index3'=>'value3');
$map=array('key1'=>'index1', 'key2'=>'index2');
// next two lines if arrays may be of different length
$newmap = array_intersect_key(array_flip($map), $array);
$newarray = array_intersect_key($array, $newmap);
$new = array_combine($newmap, $newarray);
var_dump ($new);
output:
array(2) { ["key1"]=> string(6) "value1" ["key2"]=> string(6) "value2" }
