Question

php如何将常量做为一个变量名？ - 技术问答

php如何将常量做为一个变量名？例如：$priceAvg=\"100\";$hireAvg=\"200\";define(\"_SHOW_AVG\",\"priceAvg\");我想通过以_SHOW_AVG来取得值$_SHOW_AVG来获取100？该怎么做那？

Answer 1

$priceAvg=\"100\";$hireAvg=\"200\";define(\"_SHOW_AVG\",\"$priceAvg\");bphp 发表于 2009-6-12 15:50[i][/url][/b]后面不要加双引号define(\"_SHOW_AVG\",$priceAvg);

Answer 2

define(\"_SHOW_AVG\",\"priceAvg\");$_SHOW_AVG = _SHOW_AVG??;xuer 发表于 2009-6-12 17:57[i][/url][/b]这样是不行的，花括号是必须的。

Answer 3

$priceAvg=\"100\";$hireAvg=\"200\";define(\"_SHOW_AVG\",\"$priceAvg\");

Answer 4

define(\"_SHOW_AVG\",\"priceAvg\");$_SHOW_AVG = _SHOW_AVG??;

Answer 5

8# 原来这样也可以echo $$_SHOW_AVG :sweat: