PHP Classes

PHP Random String Generator: Generates random string based on given rules

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Version License PHP version Categories
random-string 1.0GNU General Publi...5.4PHP 5, Text processing
Description 

Author

Andrei Roslovtsev

This class can generates random string based on given rules.

It can generate a random string of a given length using characters of given sets.

The generated string may have given prefix or suffix strings.

The class can generate multiple strings and assure that they are all different from each other.

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Name: Andrei Roslovtsev <contact>
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Example

<?php
/*
 * Example usage
 * HTML form that sets parameters
 * outputs result to textarea
 * Some debugging info provided as well
 */


if (isset($_POST['input-charsets'])) {

    include ('RandString.php');
    $oRS = new b_and_p\RandStrNS\RandString();


    $length = filter_input(INPUT_POST, 'input-length', FILTER_SANITIZE_NUMBER_INT);
    $parts = filter_input(INPUT_POST, 'input-parts', FILTER_SANITIZE_NUMBER_INT);
    $delim = filter_input(INPUT_POST, 'input-delim', FILTER_SANITIZE_STRING);
    $prefix = filter_input(INPUT_POST, 'input-prefix', FILTER_SANITIZE_STRING);
    $suffix = filter_input(INPUT_POST, 'input-suffix', FILTER_SANITIZE_STRING);
    $count = filter_input(INPUT_POST, 'input-count', FILTER_SANITIZE_NUMBER_INT);
    $unique = isset($_POST['input-unique']) ? true : false;

    $oRS->part_length = $length; // INT
    $oRS->parts = $parts; // INT
    $oRS->delim = $delim; // STR
    $oRS->prefix = $prefix; // STR
    $oRS->suffix = $suffix; // STR
    $oRS->count = $count; // STR
    $oRS->unique = $unique; //BOOL

    $flags = 0;
    if (isset($_POST['input-charsets'])) {
        foreach ($_POST['input-charsets'] as $item) {
            $flags += (int) $item;
        }
    }

    $oRS->flags = $flags;

    $result = $oRS->generate();
}
?>
<!doctype html>
<html>
    <head>
        <title>Random String generator</title>

        <style type="text/css">
            body {
                font-family: calibri, sans-serif
            }
            .form label {
                display:inline-block;
                width: 140px;
                font-weight: bold;
            }

            .form-group {
                margin:4px;
                padding:4px;
                border: solid 1px #ccc;
                border-radius: 6px;
                width: 400px;
                height: 1.6em;
            }
            .form-group input {
                float:right;
                padding:4px;
                margin-bottom: 4px;
            }

            #output {
                width:400px;
            }

            #output textarea {
                width:100%;
                height: 200px;
            }

        </style>

    </head>
    <body>
        <form method="post" enctype="multipart/form-data">
            <div class="form">
                <div class="form-group">
                    <label for="input-length">Part length</label>
<?php
$val = isset($length) ? $length : 2;
?>
 <input type="number" min="1" name="input-length" value="<?php echo $val; ?>">
                </div>
                <div class="form-group">
                    <label for="input-parts">Parts</label>
<?php
$val = isset($parts) ? $parts : 2;
?>
 <input type="number" min="1" name="input-parts" value="<?php echo $val; ?>">
                </div>
                <div class="form-group">
                    <label for="input-delim">Delimiter</label>
<?php
$val = isset($delim) ? $delim : '-';
?>
 <input type="text" name="input-delim" value="<?php echo $val; ?>">
                </div>

                <div class="form-group">
                    <label for="input-prefix">Prefix</label>
<?php
$val = isset($prefix) ? $prefix : '';
?>
 <input type="text" name="input-prefix" value="<?php echo $val; ?>">
                </div>


                <div class="form-group">
                    <label for="input-suffix">Suffix</label>
<?php
$val = isset($suffix) ? $suffix : '';
?>
 <input type="text" name="input-suffix" value="<?php echo $val; ?>">
                </div>

                <div class="form-group">

<?php
$bitmask = isset($flags) ? $flags : 0;
?>

                    <label for="input-charset1">Alpha lower case</label>
                    <?php
                    $checked = ($bitmask & (1 << 0)) ? 'checked' : '';
                    ?>
 <input type="checkbox" id ="input-charset1" name="input-charsets[]" value="1" <?php echo $checked; ?> >
                </div>
                <div class="form-group">
                    <label for="input-charset2">Alpha upper case</label>
<?php
$checked = ($bitmask & (1 << 1)) ? 'checked' : '';
?>
 <input type="checkbox" id ="input-charset2" name="input-charsets[]" value="2" <?php echo $checked; ?> >
                </div>
                <div class="form-group">
                    <label for="input-charset3">Numbers</label>
<?php
$checked = ($bitmask & (1 << 2)) ? 'checked' : '';
?>
 <input type="checkbox" id ="input-charset3" name="input-charsets[]" value="4" <?php echo $checked; ?> >
                </div>
                <div class="form-group">
                    <label for="input-charset4">Special characters</label>
<?php
$checked = ($bitmask & (1 << 3)) ? 'checked' : '';
?>
 <input type="checkbox" id ="input-charset4" name="input-charsets[]" value="8" <?php echo $checked; ?> >
                </div>

                <div class="form-group">
                    <label for="input-length">Count</label>
<?php
$val = isset($count) ? $count : 2;
?>
 <input type="number" min="1" name="input-count" value="<?php echo $val; ?>">
                </div>

                <div class="form-group">
                    <label for="input-length">Unique</label>
<?php
$checked = isset($unique) && $unique;
$checked_str = $checked ? 'checked' : '';
?>
 <input type="checkbox" name="input-unique" <?php echo $checked_str; ?>>
                </div>
            </div>
            <button type="submit">Submit</button>
        </form>

        <div id="output">
            <textarea readonly="true">
<?php
if (isset($oRS)) {
    if (!$oRS->error) {
        foreach ($result as $string) {
            echo $string . "\n";
        }
    } else {
        echo $oRS->error;
    }
}
?>
 </textarea>
                <?php
                if (isset($oRS)) {
                    echo 'DEBUG INFO:<br>';
                    echo 'Duplicates found in generation cycle<br>';
                    var_dump($oRS->duplicates);
                    echo 'History - all items in generation cycle<br>';
                    var_dump($oRS->history);
                }
                ?>
 </div>
    </body>
</html>

Details

rand_string

Random String generation class


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