array_keys or in_array insensitive doesnt work correctly

Question

i have a problem with insensitive array_keys and in_array ... I developing a translator, and i have something like this:

$wordsExample = array("example1","example2","example3","August","example4");
$translateExample = array("ejemplo1","ejemplo2","ejemplo3","Agosto","ejemplo4");


function foo($string,$strict=FALSE)
{
    $key = array_keys($wordsExample,$string,$strict);
    if(!empty($key))
      return $translateExample[$key[0]];
    return false;
}

echo foo('example1'); // works, prints "ejemplo1"
echo foo('august');  // doesnt works, prints FALSE

I tested with in_array and same result...:

function foo($string,$strict=FALSE)
{
    if(in_array($string,$wordsExample,$strict))
      return "WOHOOOOO";
    return false;
}

echo foo('example1'); //works , prints "WOHOOOOO"
echo foo('august'); //doesnt works, prints FALSE

Kuf · Accepted Answer · 2012-08-21 06:55:57Z

1

Create the array and find the keys with with strtolower:

$wordsExample = array("example1","example2","example3","August","example4");
$lowercaseWordsExample = array();
foreach ($wordsExample as $val) {
    $lowercaseWordsExample[] = strtolower($val);
}

if(in_array(strtolower('august'),$lowercaseWordsExample,FALSE))
      return "WOHOOOOO";

if(in_array(strtolower('aUguSt'),$lowercaseWordsExample,FALSE))
      return "WOHOOOOO";

Another way would be to write a new in_array function that would be case insensitive:

function in_arrayi($needle, $haystack) {
    return in_array(strtolower($needle), array_map('strtolower', $haystack));
}

If you want it to use less memory, better create the words array using lowercase letter.

edited Aug 21, 2012 at 6:55

answered Aug 21, 2012 at 6:36

Kuf

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3 Comments

Stefan Luv Over a year ago

Yes, is one way to do it, but system can be use many memory if you have many translations to do

Kuf Over a year ago

You don't need to create two arrays, create just the one but create it using lowercase letter. That way you won't have to create another instance

Mark Baker Over a year ago

consider using array_map() to lowercase the array entries

insertusernamehere · Accepted Answer · 2012-08-21 06:56:00Z

0

I created a small function a while to get, to test clean-URLs as they could be uppercase, lowercase or mixed:

function in_arrayi($needle, array $haystack) {

    return in_array(strtolower($needle), array_map('strtolower', $haystack));

}

Pretty easy this way.

answered Aug 21, 2012 at 6:56

insertusernamehere

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