php不全等问题
在http://www.w3school.com.cn/tiy/s.asp?f=demo_php_operator_comparison 看到的
为什么$x !== $y 为true?难道他们完全不等吗?
回复内容:
在http://www.w3school.com.cn/tiy/s.asp?f=demo_php_operator_comparison 看到的
为什么$x !== $y 为true?难道他们完全不等吗?
$a !== $b 不全等 TRUE,如果 $a 不等于 $b,或者它们的类型不同。 学PHP,要看 PHP手册; Ps: PHP 是世界上最好的语言,没有之一!
既然 $x === $y
返回了 false
, 当然 $x !== $y
返回 true
。 同样的是因为类型不同。这个示例中说因为值不相等是不恰当的,是因为值的类型不同。
楼上 Ps: PHP 是世界上最好的语言,没有之一! 虽然知道你爱好PHP,可不能带这么主观滴哟,当你越发深入学习的php就会发现其漏洞百出的!

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