Test PHP integer overflow

integer_overflow.php

<?php

echo "var_dump(...)\n";
echo "\n";

echo "PHP_INT_MAX        : ";
var_dump(PHP_INT_MAX);

echo "PHP_INT_MAX + 1    : ";
var_dump(PHP_INT_MAX + 1);

echo "PHP_INT_MAX + 1000 : ";
var_dump(PHP_INT_MAX + 1000);

echo "PHP_INT_MAX * 2 + 4: ";
var_dump(PHP_INT_MAX * 2 + 4);

echo "9.2233720368548E+18: ";
var_dump(9.2233720368548E+18);

echo "1.844674407371E+19 : ";
var_dump(1.844674407371E+19);

echo "\n";
echo "var_dump((int) ...)\n";
echo "\n";

echo "PHP_INT_MAX        : ";
var_dump((int)(PHP_INT_MAX));

echo "PHP_INT_MAX + 1    : ";
var_dump((int)(PHP_INT_MAX + 1));

echo "PHP_INT_MAX + 1000 : ";
var_dump((int)(PHP_INT_MAX + 1000));

echo "PHP_INT_MAX * 2 + 4: ";
var_dump((int)(PHP_INT_MAX * 2 + 4));

echo "9.2233720368548E+18: ";
var_dump((int)(9.2233720368548E+18));

echo "1.844674407371E+19 : ";
var_dump((int)(1.844674407371E+19));