Suppose I have first array, $aAllCities as
Array
(
[21] => London
[9] => Paris
[17] => New York
[3] => Tokyo
[25] => Shanghai
[11] => Dubai
[37] => Mumbai
)
And another array, $aNotSupportedCities as
Array
(
[0] => 37
[1] => 25
[2] => 11
)
Is it possible to get an array like this ?
Array
(
[21] => London
[9] => Paris
[17] => New York
[3] => Tokyo
)
I want to remove array values of those keys that are present in other array
Try this:
$aAllCities = array_flip( $aAllCities );
$aAllCities = array_diff( $aAllCities, $aNotSupportedCities );
$aAllCities = array_flip( $aAllCities );
Hope this helps.
foreach($aAllCities as $key => $value) {
if(in_array($key,$aNotSupportedCities)) {
unset($aAllCities[$key]);
}
}
The other answers are correct, but a smoother, faster way to do it is:
$supportedCities = array_diff_key($aAllCities, $aNotSupportedCities);
This will return all the values from $aAllCities that don't have keys in $aNotSupportedCities
Note, this compares the two arrays via their keys, so you will need to make your $aNotSupportedCities look like this:
Array
(
[37] => something
[25] => doesn't really matter
[11] => It's not reading this
)
Best of luck.
$supportedCities = array_diff_key($aAllCities, array_values($aNotSupportedCities));
$new = $aAllCities;
foreach($aNotSupportedCities as $id) {
if (isset($new[$id]) {
unset($new[$id]);
}
}
