function_exists()无法判定自定义函数
凡人
凡人 2024-04-29 11:01:01
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function test() { return true; } if (function_exists('TEST')) { echo "test是函数"; } else { echo "test不是函数"; }

//运行显示test不是函数。判定 var_dump就可以

凡人
凡人

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