CODEWITHSUNDEEP
php
dsdeveloper
dsdeveloper

Reputation: 92

how to remove array index by value in php?

Remove those array indexes whose value is 1 

array (1=>1,2=>2,3=>1,4=>1,5=>3,6=>1);

result array as 

array(2=>2,5=>3);

is there is a direct function in php? like

unset(key($a,1));

Upvotes: 0

Views: 79

Answers (5)

viral
viral

Reputation: 3743

One liner, using array_diff as

$your_array = array_diff ( $your_array, [1] );

Upvotes: 2

FatalError
FatalError

Reputation: 550

You can also use the array_flip and can use the below code:

<?php
  $arr = array(1=>1,2=>2,3=>1,4=>1,5=>3,6=>1);
  $arr1 = array_flip($arr);
  unset($arr1[1]);
  $arr = array_flip($arr1);
  print_r($arr);
?>

Upvotes: 0

Sougata Bose
Sougata Bose

Reputation: 31739

Loop through it, check and unset - 

foreach($array as $k => $v) {
    if($v == 1) {
        unset($array[$k]);
    }
}

Or use array_filter()

$newArr = array_filter($array, function($v) {
    return ($v != 1);
});

Or you can use array_flip() for some trick - 

$temp = array_flip($array);
unset($temp[1]);
$array = array_flip($temp);

Upvotes: 0

user3419778
user3419778

Reputation: 866

Using array_search() and unset, try the following:

while(($key = array_search(1, $array)) !== false) {
   unset($array[$key]);
}

Upvotes: 0

Mark Baker
Mark Baker

Reputation: 212412

look to use array_filter()

$myArray = array (1=>1,2=>2,3=>1,4=>1,5=>3,6=>1);

$myArray = array_filter(
    $myArray,
    function($value) {
        return $value !== 1;
    }
);

Upvotes: 2

Related Questions