Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we will be studying about the PHP Logical Operators.
Example
Try the following example below to have an understanding of all the Logical Operators. Copy and paste the following PHP codes in a text.php file and save the file in your PHP Server's document root and then browse it using any web browser.
<html> <head> <title>Logical Operators</title> </head> <body> <?php $a = 42; $b = 0; if( $a && $b ) { echo "TEST1 : Both a and b are true<br/>"; }else{ echo "TEST1 : Either a or b is false<br/>"; } if( $a and $b ) { echo "TEST2 : Both a and b are true<br/>"; }else{ echo "TEST2 : Either a or b is false<br/>"; } if( $a || $b ) { echo "TEST3 : Either a or b is true<br/>"; }else{ echo "TEST3 : Both a and b are false<br/>"; } if( $a or $b ) { echo "TEST4 : Either a or b is true<br/>"; }else { echo "TEST4 : Both a and b are false<br/>"; } $a = 10; $b = 20; if( $a ) { echo "TEST5 : a is true <br/>"; }else { echo "TEST5 : a is false<br/>"; } if( $b ) { echo "TEST6 : b is true <br/>"; }else { echo "TEST6 : b is false<br/>"; } if( !$a ) { echo "TEST7 : a is true <br/>"; }else { echo "TEST7 : a is false<br/>"; } if( !$b ) { echo "TEST8 : b is true <br/>"; }else { echo "TEST8 : b is false<br/>"; } ?> </body> </html>
Output
When the above code is executed, it will produce the following result -
TEST1 : Either a or b is false TEST2 : Either a or b is false TEST3 : Either a or b is true TEST4 : Either a or b is true TEST5 : a is true TEST6 : b is true TEST7 : a is false TEST8 : b is false
READ: PHP Comparison Operators
Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial guide, we are going to be discussing about the Assignment Operators.
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