PHPUnit for git pre-commit hook

pre-commit

#!/usr/bin/php
<?php
// output a little introduction
echo '>>>>>>>> Starting unit tests' . PHP_EOL;

// execute unit tests (it is assumed that a phpunit.xml configuration is present
// in the root of the project)
exec('vendor/bin/phpunit', $output, $returnCode); // cwd is assumed here
$yellow = false;
foreach ($output as $line) {
    // lines ending in "%)" are individual test result displays.
    if (strpos($line, "%)") !== false) {
        foreach (str_split($line) as $chr) {
            switch ($chr) {
                case 'F':
                    $chr = "\033[41m\033[1m$chr\033[0m";
                    break;
                case 'E':
                    $chr = "\033[91m\033[1m$chr\033[0m";
                    break;
                case 'R':
                case 'I':
                case 'W':
                    $yellow = true;
                    $chr = "\033[93m\033[1m$chr\033[0m";
            }
            echo ($chr);
        }
        echo PHP_EOL;
        continue;
    }
    if ($returnCode !== 0) {
        if (strpos($line, 'Tests:') !== false) {
            $line = "\033[41m\033[1m$line\033[0m";
        }
    } else {
        if ($yellow) {
            $color_string = "\033[103m\033[30m"; // yellow
            if ($line === "OK, but incomplete, skipped, or risky tests!") {
                $line = "$color_string$line\033[0m";
            }
            if (strpos($line, 'Tests:') !== false) {
                $line = "$color_string$line\033[0m";
            }
        } else {
            if (strpos($line, 'OK (') !== false) {
                $line = "\033[42m\033[30m$line\033[0m";
            }
        }
    }
    echo ($line . PHP_EOL);
}
echo PHP_EOL;
if ($returnCode !== 0 || $yellow) {
    $returnCode = 255;
    echo '>>>>>>>> Aborting commit.' . PHP_EOL; // disable colors and add a line break
}
exit($returnCode);