PHP development coding standards
/ PHP变量定义
PHP变量定义
PHP变量定义
XXX环境下的php代码编写要求所有的变量均需要先申明后使用，否则会有错误信息，对于数组，在使用一个不确定的key时，比如先进行isset()的判断，然后再使用；比如下面的代码：
$array ＝ array(); $var ＝ isset($array[3]) ? $array[3] : “”；
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