i've got a regular array with keys and values.
is there a simple way to remove the array element based on its value or do i have to foreach-loop it through and check every value to remove it?
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5 Answers
array_diff:
$array = array('a','b','c');
$array_to_remove = array('a');
$final_array = array_diff($array,$array_to_remove);
// array('b','c');
edit: for more info: http://www.php.net/array_diff
Comments
https://www.php.net/array_filter
PHP 5.3 example to remove "foo" from array $a:
<?php
$a = array("foo", "bar");
$a = array_filter($a, function($v) { return $v != "foo"; });
?>
The second parameter can be any kind of PHP callback (e.g., name of function as a string). You could also use a function generating function if the search value is not constant.
1 Comment
Erik
Very nice, wasn't familiar with array_fliter
Short Answerunset($array[array_search('value', $array)]);
Explanation
- Find key by its value:
$key = array_search('value', $array); - remove array element by its key:
unset($array[$key]);
Comments
You should be able to do that with a combination of array_search() and array_splice().
Untested, but should work for arrays that contain the value only once:
$array = array("Apples", "strawberries", "pears");
$searchpos = array_search("strawberries", $array);
if ($searchpos !== FALSE) {
array_splice($array, $searchpos, 1);
}
3 Comments
Tobias Cohen
And what does this code do if the array doesn't contain any strawberries?
Mike Sherov
and what if strawberries is in the input array twice?
Mike Sherov
Most days aren't my day either!
If your array does have unique values, you can flip them with array_flip
