Difference between OR and || in PHP

Difference between OR and || in PHP

Based on behavior OR and || are same,

$a = 1;
$b = 1;

if($a==$b || $a=='5') {
   echo "here";
}  // OUTPUT: here


if($a==$b || $a=='5') {
   echo "here";
}  // OUTPUT: here


//////////////////////////////////////////////////

BUT, "OR" operator have lower precedence than ||

Because 'OR' have lower priority than '=' but '||' have higher priority. Same thing apply to "and" and && operator.

Let's check difference,

<?php
$bool = true && false;
var_dump($bool); // false, that's expected

$bool = true and false;
var_dump($bool); // true, ouch!
?>

Please refer below link for more detail,
http://php.net/manual/en/language.operators.precedence.php

So use only ("||" , "&&") operator instead of ("or","and") operator.

Enjoy your coding!!!