PHP comments
Program :
<html>
<head>
<title>PHP comments</title>
</head>
<body>
<?php
//this is single line comment
$no1=20;
$no2=10;
$no3;
$no3=$no1+$no2;
echo "<br>Addition is = $no3";
/*$no3=$no1-$no2; MULTILINE COMMENT
echo "<br>Substraction is = $no3";
$no3=$no1*$no2;
echo "<br>Multiplication is = $no3";
$no3=$no1/$no2;
echo "<br>Division is = $no3";
$no3++;
echo "<br>Postincrement of no3 is = $no3";
echo "<br>Original no is = $no3 and preincrement is = ".++$no3;
$no3--;
echo "<br>Postdecrement of no3 is = $no3";
echo "<br>Original no is = $no3 and predecrement is = ".--$no3;*/
?>
</body>
</html>
OUTPUT :
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