, AND and &&

I am know about priority, but if we have one simple condition:

if ($a == 1 AND $b == 2){

}

Is there any difference with

if ($a == 1 && $b == 2){

}

?

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There is no difference at all, except that perhaps using AND is somewhat more readable.

EDIT: just checked, and there is a small difference in the operators precedence, see http://php.net/manual/en/language.operators.precedence.php

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They do the exact same thing. && has higher precedence that AND though.

This has been asked before:

PHP - and / or keywords

PHP : Difference between '&&' and 'AND'

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两者在php中都是一样的，但大多数程序员习惯于使用&&作为其在大多数编程语言中使用的语法

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