Posted By

johnloy on 05/26/09

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php
textmate

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Last Edited at 05/26/09 11:12am

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Interactive CLI promt with PHP without echoing to terminal

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/**
 * Interactively prompts for input without echoing to the terminal.
 * Requires a bash shell or Windows and won't work with
 * safe_mode settings (Uses `shell_exec`)
 */
function prompt_silent($prompt = "Enter Password:") {
  if (preg_match('/^win/i', PHP_OS)) {
    $vbscript = sys_get_temp_dir() . 'prompt_password.vbs';
    file_put_contents(
      $vbscript, 'wscript.echo(InputBox("'
      . addslashes($prompt)
      . '", "", "password here"))');
    $command = "cscript //nologo " . escapeshellarg($vbscript);
    $password = rtrim(shell_exec($command));
    unlink($vbscript);
    return $password;
  } else {
    $command = "/usr/bin/env bash -c 'echo OK'";
    if (rtrim(shell_exec($command)) !== 'OK') {
      trigger_error("Can't invoke bash");
      return;
    }
    $command = "/usr/bin/env bash -c 'read -s -p ""
      . addslashes($prompt)
      . "" mypassword && echo $mypassword'";
    $password = rtrim(shell_exec($command));
    echo "n";
    return $password;
  }
}