I have two arrays
$alpha=array('a','b','c','d','e','f');
$index=array('2','5');
I need to remove the items in the first array that has the index from the second array.
(Remove c-index is 2 and f-index is 5)
So that the returned array is
{'a','b','d','e'}
How can i do this using PHP? Thanks
Edit
Actually I need the final array as follows
[0]=>a
[1]=>b
[2]=>d
[3]=>e
Unsetting will return the array with same indexes
0 => string 'a'
2 => string 'c'
3 => string 'd'
4 => string 'e'
foreach ($index as $key) {
unset($alpha[$key]);
}
had it as array_unset() before.
array_unset must be a new function not yet created...
Please, try this for more performance:
var_dump(array_diff_key($alpha, array_flip($index)));
Another method (in case $alpha or $index happen to be big and you want to keep it all on php):
function remove_keys($array, $indexes = array()){
return array_intersect_key($array, array_diff(array_keys($array),$indexes));
}
Iterate through the keys in your $index array and remove the corresponding key during the iteration using unset():
<?php
$alpha=array('a','b','c','d','e','f');
$index=array('2','5');
foreach ($index as $key) {
unset($alpha[$key]);
}
var_dump($alpha);
?>
Output:
array(4) { [0]=> string(1) "a" [1]=> string(1) "b" [3]=> string(1) "d" [4]=> string(1) "e" }
Check this:
$array = array('a', 'b','c');
unset($array[0]);
$array = array_values($array); //reindexing
