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php中用中文做变量名

Jun 06, 2016 pm 07:50 PM
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欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 php中用中文做变量名: 在php中其他语言也是如此,一般我们定义变量都是以字母,数字,下划线组成的,但是在PHP下中文也可以作为变量的一部分,下面简单介绍一下: PHP中一个有效的变量名由字母或者下划线开

欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入

    php中用中文做变量名:

    在php中其他语言也是如此,一般我们定义变量都是以字母,数字,下划线组成的,但是在PHP下中文也可以作为变量的一部分,下面简单介绍一下:

    PHP中一个有效的变量名由字母或者下划线开头,后面跟上任意数量的字母,数字,或者下划线.按照正常的正则表达式,它将被表述为:'[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*'.

    注: 在此所说的字母是 a-z,A-Z,以及 ASCII 字符从 127 到 255(0x7f-0xff).

   

    $var = 'Bob';

    $Var = 'Joe';

    echo “$var, $Var”; // 输出 “Bob, Joe”

    $4site = 'not yet'; // 非法变更名;以数字开头

    $_4site = 'not yet'; // 合法变量名;以下划线开头

    $php自学网is = 'mansikka2'; // 合法变量名;可以用中文

    ?>

php中用中文做变量名

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