How to implement integer division judgment in php

How to implement php integer division judgment: first create a php sample file; then define a variable; finally, judge whether the result is divisible according to the remainder operation, and the judgment statement is "if (! ($a % 5) && $a)".

php method to determine divisibility:

Method 1: Judgment based on remainder operation

$a = 5
if (!（$a % 5） && $a)
    echo $a."可以被5整除";

Method 2:

It’s OK to directly take the remainder to 0, $a%5==0.

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