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));
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5 Answers
One liner, using array_diff as
$your_array = array_diff ( $your_array, [1] );
Comments
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 $value !== 1;
}
);
4 Comments
FatalError
You answer gives error "Parse error: syntax error, unexpected T_FUNCTION on line 7".
Mark Baker
@FatalError - what version of PHP are you using? I'm guessing < 5.3.0 - Demo perhaps time you should upgrade to a supported version of PHP
FatalError
@MarkBaker sorry there was version problem.
Rizier123
@FatalError Welcome in 2015, this year PHP 7 gets probably released, so get your PHP up and running with upgrading it :)
Using array_search() and unset, try the following:
while(($key = array_search(1, $array)) !== false) {
unset($array[$key]);
}
Comments
Loop through it, check and unset -
foreach($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);
Comments
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);
?>
