If you prefer to assume that the string is not always ordered before it is sent by the browser then the following code will parse and sort it. Note that I've changed French's q
to 0.9
.
<?php
$lang = 'nl,en-gb;q=0.8,en;q=0.6,fr;q=0.9,fr-ca;q=0.2';
$langs = array();
foreach(explode(',', $lang) as $entry) {
$t1 = explode(';', $entry);
switch( count($t1) ) {
case 1:
$langs[] = array($t1[0], 1.0);
break;
case 2:
$t2 = explode('=', $t1[1]);
$langs[] = array($t1[0], floatval($t2[1]));
break;
default:
echo("what is this I don't even");
break;
}
}
function mysort($a, $b) {
if( $a[1] == $b[1] ) { return 0; }
elseif( $a[1] > $b[1] ) { return -1; }
else { return 1; }
}
usort($langs, 'mysort');
var_dump($langs);
Output:
array(5) {
[0]=>
array(2) {
[0]=>
string(2) "nl"
[1]=>
float(1)
}
[1]=>
array(2) {
[0]=>
string(2) "fr"
[1]=>
float(0.9)
}
[2]=>
array(2) {
[0]=>
string(5) "en-gb"
[1]=>
float(0.8)
}
[3]=>
array(2) {
[0]=>
string(2) "en"
[1]=>
float(0.6)
}
[4]=>
array(2) {
[0]=>
string(5) "fr-ca"
[1]=>
float(0.2)
}
}