Introduction
PHP is a server scripting language, and It is a powerful tool for making interactive and dynamic Web-pages. I have used WampServer 2.2 for following excercise..
<?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("nine;five;three;one;six;eight")."<br>"; echo word_digit("one;five;eight")."\n"; ?>