'|' Bitwise OR operator
'|' operator is a bitwise OR operator and is used to set the bit to 1 if any of the corresponding bit is 1.
'||' Logical Or operator
'||' is a logical Or operator and works on complete operands as whole.
Example
Following example, shows usage of '|' vs '||' operators.
<!DOCTYPE html>
<html>
<head>
<title>PHP Example</title>
</head>
<body>
<?php
$x = 1; // 0001
$y = 2; // 0010
print('$x | $y = ');
echo $x | $y;
print("<br/>");
print('$x || $y = ');
echo $x || $y;
?>
</body>
</html>Output
$x | $y = 3 $x || $y = 1