Generate an Authentication Code in PHP

In some email activation and verification processes we would need to make authentication codes for those verifications. This PHP function helps in generating such authentication codes for verification purpose. Make use of this code snippet for generating authentication codes.

function generateAuthenticationCode($length) {
    $ac = "abcdefghijklmnopqrstuvwxyz0123456789";
    $ac_len = strlen($ac);
    for($i=0; $i<$length; $i++){
        $position = rand(0,$ac_len);
        $authenticationCode .= $ac{$position};
    }
    return $authenticationCode;
}

Random Password Generator in PHP

Generate random passwords using this simple PHP function. This function takes length as input and generates a random password or random string for usage. This function can be customized as needed for length and allowed characters. For customization please contact us.

function radomPasswordGenerator($length) {
    $ac = "abcdefghijklmnopqrstuvwxyz0123456789";
    $ac_len = strlen($ac);
    for($i=0; $i<$length; $i++){
        $position = rand(0,$ac_len);
        $randomString .= $ac{$position};
    }
    return $randomString;
}

Random Color Generator - Hex Color Code in PHP

Generate random hex color code using this simple random color generator. Creator dynamic background colors using this random color generator in php.

function randomColorGenerator() {
    $colorCode = '#';
    for($i=0; $i<6; $i++) {
        $randValue = rand(0 , 15);
        switch ($randValue) {
            case 10: $randValue = 'A'; break;
            case 11: $randValue = 'B'; break;
            case 12: $randValue = 'C'; break;
            case 13: $randValue = 'D'; break;
            case 14: $randValue = 'E'; break;
            case 15: $randValue = 'F'; break;
        }
        $colorCode .= $randValue;
    }
    return $colorCode;
}

Convert One Timezone to Another Timezone in PHP

Sometimes we need to convert time from one timezone to another timezone for some challenging scenarios. Change from one timezone to another timezone in PHP.

$date = new DateTime("2012-07-05 16:43:21", new DateTimeZone('Asia/Kolkata'));
date_default_timezone_set('America/New_York');
echo date("Y-m-d h:iA", $date->format('U'));

Count Words in a String in PHP

In Some cases we need to calculate or count the number of words in a sentence or a long string.
This simple function takes a string as parameter and counts the number of words in the string based on the space in the string.

function countWords($string) {
   $word_array = explode(" ", $string);
   return count($word_array);
}

Text to Link in PHP Functions

Convert URL in content/text to link using this simple PHP function. This PHP function takes a string and converts the URLs in the string to links. This simple function may help in making your simple content into links and referrals to your site.

function url2link($url,$target=0) {
            if($url!="") {
                echo '<a href="'.$url.'"';
                if($target) echo ' target="_blank" ';
                echo '>'.$url.'</a>';
            }
            else echo '<a href="#" onclick="alert(\"No Link Here\")">No Link</a>';
        }

PHP Function to Decode UTF8 Characters to Normal Letters

Simple php function to decode utf8 coded strings. We would have come across situations where we need to replace utf8 characters to latin characters. Below function would be a better replacement for iconv and utf8_decode functions which are available in php by default, but results may vary based on character set that has been set in the system.

function decode_utf8_string($mystring) {
        $accented = array(
            'À', 'Á', 'Â', 'Ã', 'Ä', 'Å', 'Æ', 'Ă', 'Ą',
            'Ç', 'Ć', 'Č', 'Œ',
            'Ď', 'Đ',
            'à', 'á', 'â', 'ã', 'ä', 'å', 'æ', 'ă', 'ą',
            'ç', 'ć', 'č', 'œ',
            'ď', 'đ',
            'È', 'É', 'Ê', 'Ë', 'Ę', 'Ě',
            'Ğ',
            'Ì', 'Í', 'Î', 'Ï', 'İ',
            'Ĺ', 'Ľ', 'Ł',
            'è', 'é', 'ê', 'ë', 'ę', 'ě',
            'ğ',
            'ì', 'í', 'î', 'ï', 'ı',
            'ĺ', 'ľ', 'ł',
            'Ñ', 'Ń', 'Ň',
            'Ò', 'Ó', 'Ô', 'Õ', 'Ö', 'Ø', 'Ő',
            'Ŕ', 'Ř',
            'Ś', 'Ş', 'Š',
            'ñ', 'ń', 'ň',
            'ò', 'ó', 'ô', 'ö', 'ø', 'ő',
            'ŕ', 'ř',
            'ś', 'ş', 'š',
            'Ţ', 'Ť',
            'Ù', 'Ú', 'Û', 'Ų', 'Ü', 'Ů', 'Ű',
            'Ý', 'ß',
            'Ź', 'Ż', 'Ž',
            'ţ', 'ť',
            'ù', 'ú', 'û', 'ų', 'ü', 'ů', 'ű',
            'ý', 'ÿ',
            'ź', 'ż', 'ž',
            'А', 'Б', 'В', 'Г', 'Д', 'Е', 'Ё', 'Ж', 'З', 'И', 'Й', 'К', 'Л', 'М', 'Н', 'О', 'П', 'Р',
            'а', 'б', 'в', 'г', 'д', 'е', 'ё', 'ж', 'з', 'и', 'й', 'к', 'л', 'м', 'н', 'о', 'р',
            'С', 'Т', 'У', 'Ф', 'Х', 'Ц', 'Ч', 'Ш', 'Щ', 'Ъ', 'Ы', 'Ь', 'Э', 'Ю', 'Я',
            'с', 'т', 'у', 'ф', 'х', 'ц', 'ч', 'ш', 'щ', 'ъ', 'ы', 'ь', 'э', 'ю', 'я'
            );
           
        $replace = array(
            'A', 'A', 'A', 'A', 'A', 'A', 'AE', 'A', 'A',
            'C', 'C', 'C', 'CE',
            'D', 'D',
            'a', 'a', 'a', 'a', 'a', 'a', 'ae', 'a', 'a',
            'c', 'c', 'c', 'ce',
            'd', 'd',
            'E', 'E', 'E', 'E', 'E', 'E',
            'G',
            'I', 'I', 'I', 'I', 'I',
            'L', 'L', 'L',
            'e', 'e', 'e', 'e', 'e', 'e',
            'g',
            'i', 'i', 'i', 'i', 'i',
            'l', 'l', 'l',
            'N', 'N', 'N',
            'O', 'O', 'O', 'O', 'O', 'O', 'O',
            'R', 'R',
            'S', 'S', 'S',
            'n', 'n', 'n',
            'o', 'o', 'o', 'o', 'o', 'o',
            'r', 'r',
            's', 's', 's',
            'T', 'T',
            'U', 'U', 'U', 'U', 'U', 'U', 'U',
            'Y', 'Y',
            'Z', 'Z', 'Z',
            't', 't',
            'u', 'u', 'u', 'u', 'u', 'u', 'u',
            'y', 'y',
            'z', 'z', 'z',
            'A', 'B', 'B', 'r', 'A', 'E', 'E', 'X', '3', 'N', 'N', 'K', 'N', 'M', 'H', 'O', 'N', 'P',
            'a', 'b', 'b', 'r', 'a', 'e', 'e', 'x', '3', 'n', 'n', 'k', 'n', 'm', 'h', 'o', 'p',
            'C', 'T', 'Y', 'O', 'X', 'U', 'u', 'W', 'W', 'b', 'b', 'b', 'E', 'O', 'R',
            'c', 't', 'y', 'o', 'x', 'u', 'u', 'w', 'w', 'b', 'b', 'b', 'e', 'o', 'r'
            );
           
        return str_replace($accented, $replace, $mystring);
    }