to_nato.php

<?php

/**
 * You'll have to translate a string to Pilot's alphabet (NATO phonetic alphabet) wiki.
 *
 * @author Phan Vu Hoang <vu-hoang.phan@ekino.com>
 */

function to_nato($words) {
 $lib['a']="Alpha";
 $lib['b']="Bravo";
 $lib['c']="Charlie";
 $lib['d']="Delta";
 $lib['e']="Echo";
 $lib['f']="Foxtrot";
 $lib['g']="Golf";
 $lib['h']="Hotel";
 $lib['i']="India";
 $lib['j']="Juliet";
 $lib['k']="Kilo";
 $lib['l']="Lima";
 $lib['m']="Mike";
 $lib['n']="November";
 $lib['o']="Oscar";
 $lib['p']="Papa";
 $lib['q']="Quebec";
 $lib['r']="Romeo";
 $lib['s']="Sierra";
 $lib['t']="Tango";
 $lib['u']="Uniform";
 $lib['v']="Victor";
 $lib['w']="Whiskey";
 $lib['x']="X-Ray";
 $lib['y']="Yankee";
 $lib['z']="Zulu";
 $lib['0']="Zero";
 $lib['1']="One";
 $lib['2']="Two";
 $lib['3']="Three";
 $lib['4']="Four";
 $lib['5']="Five";
 $lib['6']="Six";
 $lib['7']="Seven";
 $lib['8']="Eight";
 $lib['9']="Nine";
 $lib['-']="Dash";

 $nato=array();
 $words = strtolower($words);
 for ($i=0; $i < strlen($words); $i++) {
    $letter = substr($words, $i, 1);
    foreach ($lib as $key => $value) {
        if($letter === $key ) {
            $nato[] = $value;
        }
    }
 }

 return implode(" ",$nato);
}