Ticket #37283: mysqli_LOCK_crash_POC.php

<?php
$con = mysqli_connect("localhost", "user", "password", "wpdatabase");
if (mysqli_connect_errno()) {
  printf("Connect failed: %s\n", mysqli_connect_error());
  exit();
}

$query = "INSERT INTO `wpfs_options` ( `option_name`, `option_value`, `autoload` ) VALUES ('core_updater.lock', '1467665967', 'no') /* LOCK */";
echo "Maybe it will crash? $query\n";
$result = mysqli_query($con, $query);
echo "If you see this, it did not crash: $query\n";
if ( false===$result ) {
  printf("error: %s\n", mysqli_error($con));
}
else {
  echo 'done.';
}