There are following comparison operators supported by PHP language
Assume variable A holds 10 and variable B holds 20 then:
Operator | Description | Example |
---|---|---|
== | Checks if the value of two operands are equal or not, if yes then condition becomes true. | (A == B) is not true. |
!= | Checks if the value of two operands are equal or not, if values are not equal then condition becomes true. | (A != B) is true. |
> | Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true. | (A > B) is not true. |
< | Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true. | (A < B) is true. |
>= | Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true. | (A >= B) is not true. |
<= | Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true. | (A <= B) is true. |
PHP Comparision Operators Example:
<html> <head><title>Comparision Operators</title><head> <body> <?php $a = 42; $b = 20; if( $a == $b ){ echo "TEST1 : a is equal to b<br/>"; }else{ echo "TEST1 : a is not equal to b<br/>"; } if( $a > $b ){ echo "TEST2 : a is greater than b<br/>"; }else{ echo "TEST2 : a is not greater than b<br/>"; } if( $a < $b ){ echo "TEST3 : a is less than b<br/>"; }else{ echo "TEST3 : a is not less than b<br/>"; } if( $a != $b ){ echo "TEST4 : a is not equal to b<br/>"; }else{ echo "TEST4 : a is equal to b<br/>"; } if( $a >= $b ){ echo "TEST5 : a is either grater than or equal to b<br/>"; }else{ echo "TEST5 : a is nieghter greater than nor equal to b<br/>"; } if( $a <= $b ){ echo "TEST6 : a is either less than or equal to b<br/>"; }else{ echo "TEST6 : a is nieghter less than nor equal to b<br/>"; } ?> </body> </html>
This will produce following result
TEST1 : a is not equal to b TEST2 : a is greater than b TEST3 : a is not less than b TEST4 : a is not equal to b TEST5 : a is either grater than or equal to b TEST6 : a is nieghter less than nor equal to b