PHP operators are used to performing operations on variables and values.

• Maths Operators
• Assignment operators
• Logical Operators
• Increment and Decrement Operators
• String Operators

Maths Operators:-
arithmetic operators are used with numerice values to perform arithmetic operators like as addition, subtraction, multiplication, division or etc.
ex:-

	<?php
	//Maths operators
	echo 4+5;
	echo 5-2;
	echo 4*9;
	echo 25/5;
	?>

view raw Maths-Operators.php hosted with by GitHub

Assignment operators:-
Assignment operators are used to write a numeric value to a variable values.

ex:-

	<?php
	//assignment operators
	$num = 25;
	$num1 = 25;
	$num2 = 25;
	echo $num;
	echo $num1;
	echo $num2;
	$num = $num1 = $num2 = 25;
	echo $num. "<br>";
	echo $num1;
	echo $num2;
	?>

view raw Assignment-operators.php hosted with by GitHub

Logical Operators:-
Logical operators are used to write combine conditional operators.
ex:-

	<?php
	/*
	and And $a and $b True if both $a and $b are true
	or Or $a or $b True if either $a or $b is true
	xor Xor $a xor $b True if either $a or $b is true, but not both
	&& And $a && $b True if both $a and $b are true
	|| Or $a || $b True if either $a or $b is true
	! Not !$a True if $a is not true */
	if ((5>4) && (2<1))
	{
	echo "this is true <br>";
	}
	else
	{
	echo "this is wrong <br>";
	}
	//output this is wrong
	if ((9>8) and (2<6))
	{
	echo "this is true <br>";
	}
	else
	{
	echo "this is wrong <br>";
	}
	//output this is true
	if ((9>8) or (2<6))
	{
	echo "this is true <br>";
	}
	else
	{
	echo "this is wrong <br>";
	}
	//output this is true
	if ((9>8) xor (2<6))
	{
	echo "this is true <br>";
	}
	else
	{
	echo "this is wrong <br>";
	}
	//output this is wrong
	if ((9>8) || (2<6))
	{
	echo "this is true <br>";
	}
	else
	{
	echo "this is wrong <br>";
	}
	//output this is true
	?>

view raw Logical-Operators.php hosted with by GitHub

Increment and Decrement Operators:-
Increment and Decrement operators are used to increment and decrement a variable’s values to print.
ex:-

	<?php
	/*
	++$a Pre-increment Increments $a by one, then returns $a
	$a++ Post-increment Returns $a, then increments $a by one
	--$a Pre-decrement Decrements $a by one, then returns $a
	$a-- Post-decrement Returns $a, then decrements $a by one*/
	$a = 3;
	echo ++$a;
	// echo $d--;
	echo "<br>";
	$a = 5;
	echo ++$a;
	// echo --$c;
	echo "<br>";
	$c = 9;
	echo --$c;
	echo "<br>";
	$d = 11 + 12;
	echo $d--;
	echo "<br>";
	$e = $a + $c;
	echo $e;
	echo "<br>";
	?>

view raw Increment-and-Decrement-Operators.php hosted with by GitHub

String Operators:-
String operators are used to combine variable and values this called as Concatenation and Concatenation assignment.
ex:-

	<?php
	/*. Concatenation $txt1 . $txt2 Concatenation of $txt1 and $txt2
	.= Concatenation assignment $txt1 .= $txt2 Appends $txt2 to $txt1*/
	$name = "devops ";
	$name1 = "school ";
	echo $name , $name1; //PHP Important Operators for beginners
	echo "<br>";
	$num = "this is ";
	$num2 = "operators ";
	echo $num, $num2, "examples";
	?>

view raw String-Operator.php hosted with by GitHub

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Rajesh Kumar

I’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I am working at Cotocus. I blog tech insights at DevOps School, travel stories at Holiday Landmark, stock market tips at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at I reviewed , and SEO strategies at Wizbrand. 

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