$this->data['comment']=''; if (isset($this->session->data['comment'])) PHP中这2行代码是什么意思?
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$this->data[''comment'']='''';if(isset($this->session->data[''comment'']))PHP中这2行代码是什么意思?$this->data[''comm
$this->data['comment']=''; if (isset($this->session->data['comment'])) PHP中这2行代码是什么意思?
$this->data['comment']=''; if (isset($this->session->data['comment'])) PHP中这2行代码是什么意思?
$this->data['comment']=''; if (isset($this->session->data['comment'])) PHP中这2行代码是什么意思?
第一个：在你程序的起始位置定义过data['comment'],你的具体程序没看到,估计是全局变量吧;
这句的意思是给data['comment']赋值为''.
第二个：你程序中应该是有一个session类.
这句的意思是判断session中data['comment']是否存在
$this->data['comment']=''; if (isset($this->session->data['comment'])) PHP中这2行代码是什么意思?
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