源代码:
<?php $x=100; $y="100"; var_dump($x == $y); // returns true because values are equal echo "<br />"; var_dump($x === $y); // returns false because types are not equal echo "<br />"; var_dump($x != $y); // returns false because values are equal echo "<br />"; var_dump($x !== $y); // returns true because types are not equal echo "<br />"; $a=50; $b=90; var_dump($a > $b); echo "<br />"; var_dump($a < $b); ?>
运行结果：