T9 Spelling.php

<?php
$input = trim(file_get_contents('C-large-practice.in'));
$input = explode("\n",$input);
$input = array_slice($input,1);

$alter = array(
	'a'=>'2',
	'b'=>'22',
	'c'=>'222',
	'd'=>'3',
	'e'=>'33',
	'f'=>'333',
	'g'=>'4',
	'h'=>'44',
	'i'=>'444',
	'j'=>'5',
	'k'=>'55',
	'l'=>'555',
	'm'=>'6',
	'n'=>'66',
	'o'=>'666',
	'p'=>'7',
	'q'=>'77',
	'r'=>'777',
	's'=>'7777',
	't'=>'8',
	'u'=>'88',
	'v'=>'888',
	'w'=>'9',
	'x'=>'99',
	'y'=>'999',
	'z'=>'9999',
	' '=>'0'
);

$final = '';
foreach( $input as $k=>$line )
{
	$output = '';
	for( $i=0; $i<strlen($line); $i++ )
	{
		$char = $alter[$line[$i]];
		if( $char[0]==$output[strlen($output)-1] )
			$output .= ' ';
		$output .= $char;
	}
	$l = $k+1;
	$final .= "Case #{$l}: ".$output."\n";
}
file_put_contents('output.out', trim($final));