strcmp function

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strcmp is a function that some people may not know about; it is a binary safe string comparison:

Code: Select all

<?

    // Set up variables
    $password = "rand0m";
    $subpass = "rand0m";
    
    // Use function, will return true
    if (strcmp($password, $subpass) == 0) { #if the functions are the same, it will return 0
        echo "These strings are equal<br>";
    }
    else {
        echo "These strings are not equal<br>";
    }
    
    // Unequal
    $password = "sprand0m";
    
    if (strcmp($password, $subpass) == 0) { will not return 0
        echo "These strings are equal";
    }
    else {
        echo "These strings are not equal";
    }
?>

As you can see, the function could be useful in a simple password comparison. It can also detirmine if numbers are greater or smaller than each other.

For more info: www.php.net/strcmp