A simple php repl.

repl.php

<?php

class Repl {

  public function run() {
    while (true) {
      echo '>> ';
      echo eval($this->input()) . PHP_EOL;
    }
  }

  public function input() {
    $input = trim(fgets(STDIN));
    // Append semicolon if one does not exist.
    if (substr($input, -1) !== ';') {
      $input .= ';';
    }
    return $input;
  }

}


$repl = new Repl();
$repl->run();