2 Operators

Arithmetic Operators 

<?php

// arithmetic operators (line 8 par hai)

// assignment operators (line 21 par hai)

// comparision operators (line 32 par hai)

// logical operators

// 1. Arithmetic Operators

$a = 10;

$b = 5;

echo "for a + b, the result is " . $a + $b . "<br>";

echo "for a - b, the result is " . $a - $b . "<br>";

echo "for a * b, the result is " . $a * $b . "<br>";

echo "for a / b, the result is " . $a / $b . "<br>";

echo "for a % b, the result is " . $a % $b . "<br>"; // modulas operator

echo "for a ** b, the result is " . $a ** $b . "<br>"; // exponential operator

echo "<br>";

echo  $a + $b . "<br>";

// 2. Assignment Operators

// "+" ka sign "=" ke sath lagane par assign hui value me new value ko add kar deta hai

$a += 2;

echo "Assignment Operators + ". $a . "<br>";

$a -= 3;

echo "Assignment Operators - ". $a . "<br>";

$a *= 3;

echo "Assignment Operators * ". $a . "<br>";

$a /= 2;

echo "Assignment Operators / ". $a . "<br>";

// 3. Comparison Operators (symbol of compare operator <, >, =, >=, <=, <> )

$x = 7;

$y = 7;

// agar ham iss method se compare karenge to true ki jagah ye dega "1" or false hoga to kuch bhi show nahi karega.

echo "x = y the result is ". ($x == $y) . "<br>";

$x = 7;

$y = 8;

// agar ham "var_dump" laga kar compare karete hai to ye "true ya False" dikhata hai

echo "x = y the result is ";

echo var_dump($x == $y) . "<br>";

$p = 8;

$q = 5;

// agar ham "var_dump" laga kar "<> not equal" compare karete hai to ye "true ya False" dikhata hai

echo "p = q the result is ";

echo var_dump($p <> $q) . "<br>";

// Logical Operator

$m = false;

$n = true;

// "and" ye ek boolean show karte hai.. ye "true" tabhi show karega jab dono value "same hongi"

echo "for m and n, the result is ";

echo var_dump($m && $n) . "<br> <br>";

$abc = false;

$xyz = true; // agar dono ko "false" kar denge to result "false hoga"

// "or" ye ek boolean show karte hai.. ye "true" tabhi show karega kamse km ek value "true hogi"

echo "for m and n, the result is ";

echo var_dump($abc || $xyz) . "<br>";

$ab = true;

echo "for !m and n, the result is ";

echo var_dump(!$ab) . "<br>";

?>