<?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/>"; } ?>
This 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
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