Remove the element of php variable

Question

i have two variable , i want remove one variable from another variable

like :

$var1 = '4';
$var2 = '5,7,4,9';

if ($var1 Inside $var2)
{
// remove 4
}

//output

$var2 = '5,7,9';

Thank you ...

[What have you tried?](http://mattgemmell.com/2008/12/08/what-have-you-tried/) See [about Stack Overflow](http://stackoverflow.com/about). — John Conde, May 08 '14 at 13:00

score 5 · Accepted Answer · edited May 23 '17 at 12:28

5

Since it is a string, I think the easiest is to first convert it to an array, remove the value, and put it back together again:

$values = explode(',', $var2);

if (($key = array_search($var1, $values)) !== false) {
    unset($values[$key]);
}

$var2 = implode(',', $values);

The part about deleting from the array is gratefully copied from this answer.

edited May 23 '17 at 12:28

Community

1
1

answered May 08 '14 at 13:01

GolezTrol

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score 1 · Answer 2 · answered May 08 '14 at 13:02

1

You can use a simple str_replace which uses regex:

<?php
    $var2 = str_replace("%$var1%", "", $var2); //remove the element if it is inside
    $var2 = str_replace("%,,%", ",", $var2); //Remove the ',' if it's needed
?>

answered May 08 '14 at 13:02

Gwenc37

2,064
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thnx , maybe ur code is good but i found another Best solution – o6 qr May 08 '14 at 13:08

Remove the element of php variable

2 Answers2