php保留关键字

最新推荐文章于 2025-08-06 18:55:08 发布

lwang1729

最新推荐文章于 2025-08-06 18:55:08 发布

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CC 4.0 BY-SA版权

文章标签： php constants exception function class include

本文链接：https://blog.youkuaiyun.com/lwang1729/article/details/2506382

本文详细介绍了PHP语言中的关键字，包括逻辑运算符、特殊常量、流程控制结构等，并强调了这些关键字不能用作常量、类名、函数或方法名，但可以作为变量名使用。

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List of Keywords

These words have special meaning in PHP. Some of them represent things which look like functions, some look like constants, and so on--but they're not, really: they are language constructs. You cannot use any of the following words as constants, class names, function or method names. Using them as variable names is generally OK, but could lead to confusion.

Table M.1. PHP Keywords

and	or	xor	__FILE__	exception (PHP 5)
__LINE__	array()	as	break	case
class	const	continue	declare	default
die()	do	echo()	else	elseif
empty()	enddeclare	endfor	endforeach	endif
endswitch	endwhile	eval()	exit()	extends
for	foreach	function	global	if
include()