Highlights words piped through STDIN

highlight

#!/usr/bin/env php
<?php
if (empty($argv[1]) || strpos($argv[1], '-h') !== false) {
	die('Pass highlights as arguments (case sensitive): echo "cheese is nice" | highlight cheese nice' . PHP_EOL);
}

// Lovingly borrowed from http://blog.lenss.nl/2012/05/adding-colors-to-php-cli-script-output/ SHOUTOUT
$colors = [
	'green'		 => '0;32',
 	'yellow'	 => '1;33',
	'blue'		 => '0;34',
	'cyan'	 	 => '0;36',
	'purple'	 => '0;35',
 	'red'		 => '0;31',
 	'brown'		 => '0;33',
	'light_gray'	 => '0;37',
	'dark_gray'	 => '1;30',
	'light_red'	 => '1;31',
	'light_green' 	 => '1;32',
	'light_blue' 	 => '1;34',
	'light_purple' 	 => '1;35',
	'light_cyan' 	 => '1;36',
	'white' 	 => '1;37',
];

array_shift($argv);

$colorsToUse = count($argv);
$highlight = $argv;

$replacements = [];
foreach ($highlight as $word) {
	$colorCode = $colors[array_keys($colors)[count($replacements)]];
	$replacements[] = "\033[{$colorCode}m{$word}\033[0m"; // TODO: Reuse colors when we're out if somebody highlights > count($colors)
}

while(!feof(STDIN)) {
	//TODO: Replace fgets with fread or similar so it's faster.  Also, what if it's just an insanely long line?
	$line = fgets(STDIN);
	$line = str_replace($highlight, $replacements, $line);
	echo $line;
}