PHP comparative operators

PHP comparative operators

PHP lets you Compare one variable or value with another via its wide range of comparison operators.

Common Comparison Operators

Operatos	Description
==	Equal to
===	Equal to and of the same type
!=	Not equal to
!==	Not equal to and of the same type
>	Greater than
<	Less than
>=	Greater than or equal to
<=	Less than or equal to

Here’s example illustrating these operators in action

Eg ( == and === )

<?php $x=10; $y=10.0; echo ($x==$y); //it returns true because both the variable contains same value. echo ($x===$y); /*it returns false because === strongly compares. here both variable contain same value i.e 10 but different datatype one is integer and another is float.*/ ?>

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<?php $x=10; $y=10.0; echo ($x==$y); //it returns true because both the variable contains same value. echo ($x===$y); /*it returns false because === strongly compares. here both variable contain same value i.e 10 but different datatype one is integer and another is float.*/   ?>

in the above example.
Two variable $x , $y define
$x hold the value 10
$y hold value 10.0
Now perform several operation on this
First check ($x==$y)=>it returns true because the value for both is same
Second Check($x===$y)=>it returns false because now it also compare data-type. $y hold a float value.

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Difference between ( == and === )

<?php //another example $bool=(boolean)1; $int=(integer)1; //return true because both have same value. echo ($bool==$int); //return false because both have same value but diff data type echo ($bool===$int); ?>

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<?php //another example $bool=(boolean)1; $int=(integer)1; //return true because both have same value. echo ($bool==$int); //return false because both have same value but diff data type echo ($bool===$int);   ?>

$bool=(boolean)1
($bool==$int) it returns true because both have same value
$int= (integer)1
($bool===$int) its return false because both have different data type

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Use of( >, <, >=, <= )

<?php $a=10; $b=11; echo $a>$b; //return false because $a is less than $b. echo $a<$b; //return true because $a is less than $b. echo $a>=$b; //return false because neighter $a is greater nor equal to $b echo $a<=$b; //return true because $a is than $b. ?>

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<?php   $a=10; $b=11; echo $a>$b; //return false because $a is less than $b. echo $a<$b; //return true because $a is less than $b. echo $a>=$b; //return false because neighter $a is greater nor equal to $b echo $a<=$b; //return true because $a is than $b. ?>

$a hold the value 10
$b hold the value 11
check ($a>$b)=> returns false because $a less than $b.
check($a>=$b)=> returns true because $a neighter grater nor equal to $b.