Interactive PHP shell. In Windows, running php in interactive mode is pretty quirky. This script attempts to solve this problem. It allows entering entire function definitions and classes. You may enter code on multiple lines. Nothing will be evaluated until you enter a semicolon. Save this to a file and run it from console. Hit CTRL+C to exit.

PHP interactive shell

<?php 
$fh = fopen('php://stdin', 'r');
$cmd = '';
$bcLvl = 0;
while (true)
{
  $line = rtrim(fgets($fh));
	$bcLvl += substr_count($line, '{') - substr_count($line, '}');
	$cmd.= $line;
	if ($bcLvl > 0 or substr($cmd, -1) !== ';')
		continue;
	eval($cmd);
	$cmd = '';
}