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Post: PHP Primer 012 : 常量取值

PHP Primer 012 : 常量取值

Published 12:01 Jan 22, 2012.

Created by @ezra. Categorized in #Programming, and tagged as #PHP.

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定义了常量,还要获取常量的值,除了通过我们指定的常量名直接获取外,还可以通过 constant() 函数来获取:

    $p = "PI2";
    $var_pi1 = PI1;
    echo $var_pi1;
    echo "\n";
    $var_pi2 = constant($p);
    echo $var_pi2;
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