Match strings with an if clause without checking capitals in php

Question

I have this code:

$a = 'abc';
$b = 'AbC';

if ($a == $b)
{
    echo 'abc == ABc!';
}
else
{
    echo 'abc != ABc!';
}

Now it echoes abc != ABc! but i'd like it to match the strings regardless of the capitals.

Convert both strings to upper case or lowercase and then compare them. [strtoupper()](http://php.net/manual/en/function.strtoupper.php) — IsThisJavascript, Jul 30 '18 at 09:43
Just a friendly nitpick. Next time you post code please ensure the test snippet you post actually executes. You are missing several `;` in that example — IsThisJavascript, Jul 30 '18 at 09:47

Ne Ma · Accepted Answer · 2018-07-30T09:59:36.553

3

Two options:

1) convert the casing and do a comparison.

strtolower($a) === strtolower($b)

One caveat of this is that for non-utf8 characters and non-english languages this does not work well.

2) use case insensitive comparison

if (strcasecmp($a, $b) == 0) {

edited Jul 30 '18 at 09:59

answered Jul 30 '18 at 09:46

Ne Ma

Thanks! `strcasecmp` works perfectly! I checked out `strtolower` earlier but it wouldn't convert Ä to ä, which i kinda needed. – CodingMage Jul 30 '18 at 09:52
I did note that its not good for non-utf8 but forgot about non-english languages. Thanks for the feedback - I have amended my answer with that information in case someone comes across it in the future. – Ne Ma Jul 30 '18 at 10:00

1 Answers1