How to delete wrong symbols and wrong length strings from string array?

Question

I have such array:

$array = array('abC12', 'bC44', 'Am286c$', 'cC092', 'cC09288');

With using rexexp it is necessary to, at first, delete symbols (replace by ''), that are not in [A-Ca-c0-9]. At second, it is necessary to delete from array variables that not match such condition: string length not equal to 5 (values 'bC44' and 'cC09288').

So, as result array must contain:

$array = array('abC12', 'A286c', 'cC092');

Thanks you for any help!

Vladimir.

I tried, for example this: $array = preg_replace('/^[a-c0-9]{5}$/i', '', $array); — VladimirSap, May 29 '14 at 07:51
ok,you can take help from this for replacing symbols and spaces in the string http://stackoverflow.com/questions/14114411/remove-all-special-characters-from-a-string — Vandana Pareek, May 29 '14 at 07:53

score 1 · Accepted Answer · answered May 29 '14 at 07:42

1

$result = array();
foreach ($array as $val) {
    $val = preg_replace('/[^a-c0-9]/i', '', $val); // Remove symbols
    if (strlen($val) == 5) { // Check string length
        $result[] = $val;
    }
}

answered May 29 '14 at 07:42

Barmar

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Barmar, thanks you very much! Is it possible to use only preg_replace (somehow with {32})? So not to use if block – VladimirSap May 29 '14 at 07:48
`preg_replace` just returns the updated string, it won't have any effect on whether the string is put in `$result`. – Barmar May 29 '14 at 07:54

score 0 · Answer 2 · answered May 29 '14 at 08:10

How about:

$array = array('abC12', 'bC44', 'Am286c$', 'cC092', 'cC09288');
$array = array_filter(preg_replace('/[^a-c0-9]/i', '',$array),function ($var) {return strlen($var) == 5;});
print_r($array);

output:

Array
(
    [0] => abC12
    [2] => A286c
    [3] => cC092
)

preg_replace acts also on array.
Documentation preg_replace, array_filter

How to delete wrong symbols and wrong length strings from string array?

2 Answers2