Tag Archives: php

CodeIgniter: Load View from Database (more or less)

I have seen a few people asking how to load a view from a database (or something other than a physical file in the “views” folder).

In my particular case, a client wants the ability to edit HTML and TEXT email templates. Without giving them direct access to editing the physical files, I decided to move the views being used for email to the database instead. Continue reading

Updated ISO-3166 Country List as PHP Array

Here is an updated version of ISO-3166 Country List as PHP Array

$countries = array(
    'AF' => 'Afghanistan',
    'AX' => 'Åland Islands',
    'AL' => 'Albania',
    'DZ' => 'Algeria',
    'AS' => 'American Samoa',
    'AD' => 'Andorra',
    'AO' => 'Angola',
    'AI' => 'Anguilla',
    'AQ' => 'Antarctica',
    'AG' => 'Antigua and Barbuda',
    'AR' => 'Argentina',
    'AM' => 'Armenia',
    'AW' => 'Aruba',
    'AU' => 'Australia',
    'AT' => 'Austria',
    'AZ' => 'Azerbaijan',
    'BS' => 'Bahamas',
    'BH' => 'Bahrain',
    'BD' => 'Bangladesh',
    'BB' => 'Barbados',
    'BY' => 'Belarus',
    'BE' => 'Belgium',
    'BZ' => 'Belize',
    'BJ' => 'Benin',
    'BM' => 'Bermuda',
    'BT' => 'Bhutan',
    'BO' => 'Bolivia, Plurinational State of',
    'BQ' => 'Bonaire, Sint Eustatius and Saba',
    'BA' => 'Bosnia and Herzegovina',
    'BW' => 'Botswana',
    'BV' => 'Bouvet Island',
    'BR' => 'Brazil',
    'IO' => 'British Indian Ocean Territory',
    'BN' => 'Brunei Darussalam',
    'BG' => 'Bulgaria',
    'BF' => 'Burkina Faso',
    'BI' => 'Burundi',
    'KH' => 'Cambodia',
    'CM' => 'Cameroon',
    'CA' => 'Canada',
    'CV' => 'Cape Verde',
    'KY' => 'Cayman Islands',
    'CF' => 'Central African Republic',
    'TD' => 'Chad',
    'CL' => 'Chile',
    'CN' => 'China',
    'CX' => 'Christmas Island',
    'CC' => 'Cocos (Keeling) Islands',
    'CO' => 'Colombia',
    'KM' => 'Comoros',
    'CG' => 'Congo',
    'CD' => 'Congo, the Democratic Republic of the',
    'CK' => 'Cook Islands',
    'CR' => 'Costa Rica',
    'CI' => 'Côte d\'Ivoire',
    'HR' => 'Croatia',
    'CU' => 'Cuba',
    'CW' => 'Curaçao',
    'CY' => 'Cyprus',
    'CZ' => 'Czech Republic',
    'DK' => 'Denmark',
    'DJ' => 'Djibouti',
    'DM' => 'Dominica',
    'DO' => 'Dominican Republic',
    'EC' => 'Ecuador',
    'EG' => 'Egypt',
    'SV' => 'El Salvador',
    'GQ' => 'Equatorial Guinea',
    'ER' => 'Eritrea',
    'EE' => 'Estonia',
    'ET' => 'Ethiopia',
    'FK' => 'Falkland Islands (Malvinas)',
    'FO' => 'Faroe Islands',
    'FJ' => 'Fiji',
    'FI' => 'Finland',
    'FR' => 'France',
    'GF' => 'French Guiana',
    'PF' => 'French Polynesia',
    'TF' => 'French Southern Territories',
    'GA' => 'Gabon',
    'GM' => 'Gambia',
    'GE' => 'Georgia',
    'DE' => 'Germany',
    'GH' => 'Ghana',
    'GI' => 'Gibraltar',
    'GR' => 'Greece',
    'GL' => 'Greenland',
    'GD' => 'Grenada',
    'GP' => 'Guadeloupe',
    'GU' => 'Guam',
    'GT' => 'Guatemala',
    'GG' => 'Guernsey',
    'GN' => 'Guinea',
    'GW' => 'Guinea-Bissau',
    'GY' => 'Guyana',
    'HT' => 'Haiti',
    'HM' => 'Heard Island and McDonald Islands',
    'VA' => 'Holy See (Vatican City State)',
    'HN' => 'Honduras',
    'HK' => 'Hong Kong',
    'HU' => 'Hungary',
    'IS' => 'Iceland',
    'IN' => 'India',
    'ID' => 'Indonesia',
    'IR' => 'Iran, Islamic Republic of',
    'IQ' => 'Iraq',
    'IE' => 'Ireland',
    'IM' => 'Isle of Man',
    'IL' => 'Israel',
    'IT' => 'Italy',
    'JM' => 'Jamaica',
    'JP' => 'Japan',
    'JE' => 'Jersey',
    'JO' => 'Jordan',
    'KZ' => 'Kazakhstan',
    'KE' => 'Kenya',
    'KI' => 'Kiribati',
    'KP' => 'Korea, Democratic People\'s Republic of',
    'KR' => 'Korea, Republic of',
    'KW' => 'Kuwait',
    'KG' => 'Kyrgyzstan',
    'LA' => 'Lao People\'s Democratic Republic',
    'LV' => 'Latvia',
    'LB' => 'Lebanon',
    'LS' => 'Lesotho',
    'LR' => 'Liberia',
    'LY' => 'Libya',
    'LI' => 'Liechtenstein',
    'LT' => 'Lithuania',
    'LU' => 'Luxembourg',
    'MO' => 'Macao',
    'MK' => 'Macedonia, The Former Yugoslav Republic of',
    'MG' => 'Madagascar',
    'MW' => 'Malawi',
    'MY' => 'Malaysia',
    'MV' => 'Maldives',
    'ML' => 'Mali',
    'MT' => 'Malta',
    'MH' => 'Marshall Islands',
    'MQ' => 'Martinique',
    'MR' => 'Mauritania',
    'MU' => 'Mauritius',
    'YT' => 'Mayotte',
    'MX' => 'Mexico',
    'FM' => 'Micronesia, Federated States of',
    'MD' => 'Moldova, Republic of',
    'MC' => 'Monaco',
    'MN' => 'Mongolia',
    'ME' => 'Montenegro',
    'MS' => 'Montserrat',
    'MA' => 'Morocco',
    'MZ' => 'Mozambique',
    'MM' => 'Myanmar',
    'NA' => 'Namibia',
    'NR' => 'Nauru',
    'NP' => 'Nepal',
    'NL' => 'Netherlands',
    'NC' => 'New Caledonia',
    'NZ' => 'New Zealand',
    'NI' => 'Nicaragua',
    'NE' => 'Niger',
    'NG' => 'Nigeria',
    'NU' => 'Niue',
    'NF' => 'Norfolk Island',
    'MP' => 'Northern Mariana Islands',
    'NO' => 'Norway',
    'OM' => 'Oman',
    'PK' => 'Pakistan',
    'PW' => 'Palau',
    'PS' => 'Palestine, State of',
    'PA' => 'Panama',
    'PG' => 'Papua New Guinea',
    'PY' => 'Paraguay',
    'PE' => 'Peru',
    'PH' => 'Philippines',
    'PN' => 'Pitcairn',
    'PL' => 'Poland',
    'PT' => 'Portugal',
    'PR' => 'Puerto Rico',
    'QA' => 'Qatar',
    'RE' => 'Réunion',
    'RO' => 'Romania',
    'RU' => 'Russian Federation',
    'RW' => 'Rwanda',
    'BL' => 'Saint Barthélemy',
    'SH' => 'Saint Helena, Ascension and Tristan da Cunha',
    'KN' => 'Saint Kitts and Nevis',
    'LC' => 'Saint Lucia',
    'MF' => 'Saint Martin (French part)',
    'PM' => 'Saint Pierre and Miquelon',
    'VC' => 'Saint Vincent and the Grenadines',
    'WS' => 'Samoa',
    'SM' => 'San Marino',
    'ST' => 'Sao Tome and Principe',
    'SA' => 'Saudi Arabia',
    'SN' => 'Senegal',
    'RS' => 'Serbia',
    'SC' => 'Seychelles',
    'SL' => 'Sierra Leone',
    'SG' => 'Singapore',
    'SX' => 'Sint Maarten (Dutch part)',
    'SK' => 'Slovakia',
    'SI' => 'Slovenia',
    'SB' => 'Solomon Islands',
    'SO' => 'Somalia',
    'ZA' => 'South Africa',
    'GS' => 'South Georgia and the South Sandwich Islands',
    'SS' => 'South Sudan',
    'ES' => 'Spain',
    'LK' => 'Sri Lanka',
    'SD' => 'Sudan',
    'SR' => 'Suriname',
    'SJ' => 'Svalbard and Jan Mayen',
    'SZ' => 'Swaziland',
    'SE' => 'Sweden',
    'CH' => 'Switzerland',
    'SY' => 'Syrian Arab Republic',
    'TW' => 'Taiwan, Province of China',
    'TJ' => 'Tajikistan',
    'TZ' => 'Tanzania, United Republic of',
    'TH' => 'Thailand',
    'TL' => 'Timor-Leste',
    'TG' => 'Togo',
    'TK' => 'Tokelau',
    'TO' => 'Tonga',
    'TT' => 'Trinidad and Tobago',
    'TN' => 'Tunisia',
    'TR' => 'Turkey',
    'TM' => 'Turkmenistan',
    'TC' => 'Turks and Caicos Islands',
    'TV' => 'Tuvalu',
    'UG' => 'Uganda',
    'UA' => 'Ukraine',
    'AE' => 'United Arab Emirates',
    'GB' => 'United Kingdom',
    'US' => 'United States',
    'UM' => 'United States Minor Outlying Islands',
    'UY' => 'Uruguay',
    'UZ' => 'Uzbekistan',
    'VU' => 'Vanuatu',
    'VE' => 'Venezuela, Bolivarian Republic of',
    'VN' => 'Viet Nam',
    'VG' => 'Virgin Islands, British',
    'VI' => 'Virgin Islands, U.S.',
    'WF' => 'Wallis and Futuna',
    'EH' => 'Western Sahara',
    'YE' => 'Yemen',
    'ZM' => 'Zambia',
    'ZW' => 'Zimbabwe'
);

Easily convert MySQL database collations and alter character sets

I can’t remember what all I looked at for references, but this completed tool will generate the SQL  commands necessary to convert your database, tables and fields from any collation and character set into another.

It goes without saying to make a backup of your database before running such commands. If you don’t make a backup first, shame on you :P Continue reading

Simple PHP function to convert hexadecimal colors to RGB (red, green, blue) decimal values

This function will convert hexadecimal colors with a length of 6, 3, 2, or 1 into their RGB decimal equivalents. If a value cannot be converted, it defaults to black…

function hex2rgb($hex = NULL) {
	preg_match('/^#{0,1}([0-9a-f]{1,6})$/i', $hex, $matches);
	if ($hex[0] == '#') $hex = substr($hex, 1);
	$length = @strlen($matches[1]);
	switch ($length) {
		case 6:
			$rgb = array($hex[0] . $hex[1], $hex[2] . $hex[3], $hex[4] . $hex[5]);
			break;
		case 3:
			$rgb = array($hex[0] . $hex[0], $hex[1] . $hex[1], $hex[2] . $hex[2]);
			break;
		case 2:
			$rgb = array($hex[0] . $hex[1], $hex[0] . $hex[1], $hex[0] . $hex[1]);
			break;
		default:
			$hex = ($length == 1) ? $hex . $hex : 0;
			$rgb = array($hex, $hex, $hex);
			break;
	}
	return array(
		'r' => hexdec($rgb[0]),
		'g' => hexdec($rgb[1]),
		'b' => hexdec($rgb[2])
	);
}

Short, simple and sweet :)

Improved database table structure for CodeIgniter sessions

I had a problem where CodeIgniter sessions stored in the database were creating multiple session_id’s (each time the session library was called) for the same user.

Here is how my session configuration is defined…

$config['sess_cookie_name']        = 'my-session';
$config['sess_expiration']        = 60*60*2; //2 hours
$config['sess_expire_on_close']    = TRUE;
$config['sess_encrypt_cookie']    = FALSE;
$config['sess_use_database']    = TRUE;
$config['sess_table_name']        = 'sessions';
$config['sess_match_ip']        = FALSE;
$config['sess_match_useragent']    = TRUE;
$config['sess_time_to_update']    = 300;

Here is the updated table structure…

CREATE TABLE IF NOT EXISTS `sessions` (
  `session_id` varchar(32) NOT NULL default '0',
  `ip_address` varchar(16) NOT NULL default '0',
  `user_agent` varchar(255) NOT NULL,
  `last_activity` int(10) unsigned NOT NULL default '0',
  `user_data` text NOT NULL,
  PRIMARY KEY  (`session_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;

My solution… First, I increased the user_agent field to 255 characters in length. Then, since session_id is always 32 characters in length, I reduced that from 40. If you have any other suggestions, feel free to leave a comment.

Hope this helps someone else having the same problem with CodeIgniter sessions that are being stored in the database :)

Remove www prefix from domain using PHP

I see this question a lot and usually it comes down to getting the current host name for use with cookies. Lets say I want to make a domain-wide cookie, that does not include the standard www prefix such as www.robertmullaney.com. In order for the cookie to work with or without the www prefix, it needs to become ‘.robertmullaney.com’.

preg_replace('/^www\./i', '.', $_SERVER['HTTP_HOST'])

Now, some of you may be looking for a way to determine the top-level domain for something like this.subdomain.robertmullaney.com. That is not an easy solution (since many TLDs have multiple suffixes like .co.uk). If that’s what you’re looking for, check back later and see if I have come up with a good solution… that one’s tricky.

PHP: Incrementing/decrementing a numeric string that has letter (alpha) prefixes

I see this question quite a bit in programming discussions and forums. I’ll be linking to this post from now on to avoid re-posting the same replies every time someone asks.

String Value: XYZ123

Desired Result: XYZ124

The majority of solutions I have read regarding this problem require splitting the string or using regular expressions to manipulate the numeric portion. The overhead for complex solutions for such a simple problem are simply overkill. The example below shows the easiest way to increment the string  and requires minimal overhead… Continue reading

Disable browser cache easily with CodeIgniter

I have a project where users are validated by session data. When the user logs out I destroy the session and redirect them to the log-in page, but this does not prevent them from clicking the browser’s “back” button, in which case they still see the data.

My first solution was to set headers with PHP’s header() function. Then I decided to use CodeIgniter’s setheader() function from the Output library (no real difference, just using CI methods when possible). Finally, I decided the best way to do this would be to extend the Output library itself. This way I am not repeating multiple function calls in each controller. Here is end-result… Continue reading