Logical operator

http://phpmysql-academy.blogspot.in/
Example: 1

    <?php

    if(1 > 1)
    {
    echo "True";
    }

    else
    {
    echo "False";
    }

    ?>


Example: 2


    <?php

    if( 1 > 1 || 1==1 )
    {
    echo "True";
    }

    else
    {
    echo "False";
    }

    ?>



Example: 3


    <?php

    if( 1 > 1 && 1==1 )
    {
    echo "True";
    }

    else
    {
    echo "False";
    }

    ?>


Example: 4


    <?php

    if( 1 >= 1 && 1==1 )
    {
    echo "True";
    }

    else
    {
    echo "False";
    }

    ?>



Example: 5


    <?php

    $username = "alex";
    $password = "abc";
    if( $username && $password )
    {
    echo "Ok.";
    }

    else
    {
    echo "You forgot to fill out a Field.";
    }

    ?>



Example: 6


    <?php

    $username = "alex";
    $password = "";

    if( $username && $password )
    {
    echo "Ok.";
    }

    else
    {
    echo "You forgot to fill out a Field.";
    }

    ?>


Example: 7

    <?php

    $username = "alex";
    $password = "";

    if( $username )
    {
    echo "Ok.";
    }

    else
    {
    echo "You forgot to fill out a Field.";
    }

    ?>


Example: 8

    <?php

    $username = "alex";
    $password = "";

    if( $username || $password )
    {
    echo "Ok.";
    }

    else
    {
    echo "You forgot to fill out a Field.";
    }

    ?>



Example: 9


    <?php

    $username = "";
    $password = "";

    if( $username || $password )
    {
    echo "Ok.";
    }

    else
    {
    echo "Nothing.";
    }

    ?>