Converting words to numbers in PHP

Welcome back to shorltearner.com, we are starting a new series of PHP interview questions for beginners and experienced,so in previous post we learn, Write a PHP program to check if the bits of the two given positions of a number are same or not

In this post we see how to Converting words to numbers in PHP.
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&lt;?php
function word_digit($word) {
    $warr = explode(';',$word);
    $result = '';
    foreach($warr as $value){
        switch(trim($value)){
            case 'zero':
                $result .= '0';
                break;
            case 'one':
                $result .= '1';
                break;
            case 'two':
                $result .= '2';
                break;
            case 'three':
                $result .= '3';
                break;
            case 'four':
                $result .= '4';
                break;
            case 'five':
                $result .= '5';
                break;
            case 'six':
                $result .= '6';
                break;
            case 'seven':
                $result .= '7';
                break;
            case 'eight':
                $result .= '8';
                break;
            case 'nine':
                $result .= '9';
                break;    
        }
    }
    return $result;
}

echo word_digit("zero;three;five;six;eight;one")."\n";
echo word_digit("seven;zero;one")."\n";
?>

<?php

function word_digit($word) {

$warr = explode(';',$word);

$result = '';

foreach($warr as $value){

switch(trim($value)){

case 'zero':

$result .= '0';

break;

case 'one':

$result .= '1';

break;

case 'two':

$result .= '2';

break;

case 'three':

$result .= '3';

break;

case 'four':

$result .= '4';

break;

case 'five':

$result .= '5';

break;

case 'six':

$result .= '6';

break;

case 'seven':

$result .= '7';

break;

case 'eight':

$result .= '8';

break;

case 'nine':

$result .= '9';

break;

}

return $result;

}

echo word_digit("zero;three;five;six;eight;one")."\n";

echo word_digit("seven;zero;one")."\n";

035681 701

1	035681 701