Patch up sendmail to force emails to go to you (useful in development).

sendmailRedirect.php

echo 'Enter the path to sendmail [/usr/sbin/sendmail]: ';
if (! (bool) $sendmail = trim(fgets(STDIN))) {
	$sendmail = '/usr/sbin/sendmail';
}

if (! is_writable($sendmail)) {
	echo 'Cannot write to ', $sendmail, ', please run with sudo.', PHP_EOL;
	exit(1);
}

echo 'Enter your email address, and press enter: ';
if (! (bool) $developerEmail = trim(fgets(STDIN))) {
	echo 'You must specify an email address.', PHP_EOL;
	exit(1);
}

$sendmailReal = $sendmail . '_real';

if (file_exists($sendmailReal)) {
	echo $sendmailReal, ' already exists!', PHP_EOL;
	exit(1);
}

// Move sendmail out of the way.
if (! rename($sendmail, $sendmailReal)) {
	echo 'Failed to rename sendmail!', PHP_EOL;
	exit(1);
}

$sendmailScript = <<<EOT
#!/bin/bash

formail -R cc X-original-cc \
	-R to X-original-to \
	-R bcc X-original-bcc \
	-f -A"To: ${developerEmail}" \
	| ${sendmailReal} -t -i $@
EOT;

if (! file_put_contents($sendmail, $sendmailScript)) {
	echo 'Failed to write script!', PHP_EOL;
	exit(1);
}

if (! chmod($sendmail, 0755)) {
	echo 'Failed to make the script executable!', PHP_EOL;
	exit(1);
}

echo 'All done!', PHP_EOL;