I have an PHP array that looks something like this:
Index Key Value
[0] 1 Awaiting for Confirmation
[1] 2 Assigned
[2] 3 In Progress
[3] 4 Completed
[4] 5 Mark As Spam
When I var_dump the array values i get this:
array(5) { [0]=> array(2) { ["key"]=> string(1) "1" ["value"]=> string(25) "Awaiting for Confirmation" } [1]=> array(2) { ["key"]=> string(1) "2" ["value"]=> string(9) "Assigned" } [2]=> array(2) { ["key"]=> string(1) "3" ["value"]=> string(11) "In Progress" } [3]=> array(2) { ["key"]=> string(1) "4" ["value"]=> string(9) "Completed" } [4]=> array(2) { ["key"]=> string(1) "5" ["value"]=> string(12) "Mark As Spam" } }
I wanted to remove Completed and Mark As Spam. I know I can unset[$array[3],$array[4])
, but the problem is that sometimes the index number can be different.
Is there a way to remove them by matching the value name instead of the key value?
Answer: Use the PHP unset() Function If you want to delete an element from an array you can simply use the unset() function. The following example shows how to delete an element from an associative array and numeric array.
Given an associative array containing array elements and the task is to remove a key and its value from the associative array. Method 1: Using unset() function: The unset() function is used to unset a key and its value in an associative array. print_r( $arr );
pop() function: This method is use to remove elements from the end of an array. shift() function: This method is use to remove elements from the start of an array. splice() function: This method is use to remove elements from the specific index of an array.
The array_splice() function removes selected elements from an array and replaces it with new elements. The function also returns an array with the removed elements. Tip: If the function does not remove any elements (length=0), the replaced array will be inserted from the position of the start parameter (See Example 2).
Your array is quite strange : why not just use the key
as index, and the value
as... the value ?
Wouldn't it be a lot easier if your array was declared like this :
$array = array(
1 => 'Awaiting for Confirmation',
2 => 'Asssigned',
3 => 'In Progress',
4 => 'Completed',
5 => 'Mark As Spam',
);
That would allow you to use your values of key
as indexes to access the array...
And you'd be able to use functions to search on the values, such as array_search()
:
$indexCompleted = array_search('Completed', $array);
unset($array[$indexCompleted]);
$indexSpam = array_search('Mark As Spam', $array);
unset($array[$indexSpam]);
var_dump($array);
Easier than with your array, no ?
Instead, with your array that looks like this :
$array = array(
array('key' => 1, 'value' => 'Awaiting for Confirmation'),
array('key' => 2, 'value' => 'Asssigned'),
array('key' => 3, 'value' => 'In Progress'),
array('key' => 4, 'value' => 'Completed'),
array('key' => 5, 'value' => 'Mark As Spam'),
);
You'll have to loop over all items, to analyse the value
, and unset the right items :
foreach ($array as $index => $data) {
if ($data['value'] == 'Completed' || $data['value'] == 'Mark As Spam') {
unset($array[$index]);
}
}
var_dump($array);
Even if do-able, it's not that simple... and I insist : can you not change the format of your array, to work with a simpler key/value system ?
...
$array = array(
1 => 'Awaiting for Confirmation',
2 => 'Asssigned',
3 => 'In Progress',
4 => 'Completed',
5 => 'Mark As Spam',
);
return array_values($array);
...
$key = array_search("Mark As Spam", $array);
unset($array[$key]);
For 2D arrays...
$remove = array("Mark As Spam", "Completed");
foreach($arrays as $array){
foreach($array as $key => $value){
if(in_array($value, $remove)) unset($array[$key]);
}
}
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