php中的含义是什么意思？ [重复]

Question

This question already has an answer here:

• Reference — What does this symbol mean in PHP? 18 answers

&& is clear in PHP which means AND. But how about just &?

For example, what does $error['type'] & E_FATAL mean?

Please help me since I am stuck. The code is here:

function shut(){

   $error = error_get_last();

   if($error && ($error['type'] & E_FATAL)){
       handler($error['type'], $error['message'], $error['file'], $error['line']);
   }

}

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Answer 1

It's the bitwise AND operator. PHP manual.

Also, read this: Reference - What does this symbol mean in PHP?