JQuery | Uncaught TypeError: e.indexOf is not a function This error occur because you may try to load an event handler which is removed from latest version of jQuery. Event handler like .load(), .error(), .toggle()…

Codeigniter | where_in  The where_in() allows you to pass an array in where clause. It generates a WHERE field IN ('item', 'item') SQL query. Syntax: $this->db->where('condition'); <?php $ids = array('1', '2', '3'); $this->db->from('users'); $this->db->where_in('id', $ids);…

PHP | Warning: A non-numeric value encountered This error occur when you are trying to do a mathematical operation on an integer with a nun-numeric value or a string.  Info: New E_WARNING and E_NOTICE errors…

PHP | Comments A comment in PHP code is a line that is not executed as a part of the program. It's only read by someone who is looking at the code. By reading the comments…

PHP | Case Sensitive In PHP, keywords (e.g. if, else, while, echo, etc.), classes, functions, and user-defined functions are not case sensitive but all variable names are case-sensitive.   If you defined function name in…

PHP | Syntax and Tags PHP introduce list of Tags to code php. PHP tags allow PHP parsing engine to get in and get out from the php block. A php script can be placed…

PHP | Statement $x = 3 + "15%" + "$25"? The correct answer is 18. Here’s why: PHP is a  losely typeed language, therefor it do automatic type conversion based on the context in which…

PHP | Array error fix | array_merge() The output will be as follows: array(2) { [0]=> int(1) [1]=> int(2) } NULL NULL It will also generate two warning messages as follows: Warning: array_merge(): Argument #2…

PHP | Output of the following statements var_dump(0123 == 123); var_dump('0123' == 123); var_dump('0123' === 123   var_dump(0123 == 123) This will output bool(false) because the leading 0 in 0123 tells PHP interpreter to treat the value…

PHP | output of $a and $b once this code $a = '1'; $b = &$a; $b = "2$b" executed; Both $a and $b will output a string "21".   Because the statement $b = &$a; sets…

Codeigniter | List Databases supported By Codeigniter Following Databases are supported by Codeigniter Frameworks: Database Name Drivers to support Codeigniter MySQL MySQL (deprecated), MYSQLI and PDO drivers Oracle oci8 and PDO drivers PostgreSQL Postgre and…

Codeigniter | routes  Routing rules are defined in your application/config/routes.php file.    In it you'll see an array called $route that permits you to specify your own routing criteria. Routes can either be specified using…

CodeIgniter | What is helpers | Load helper file Helper is simply a collection of function in a particular category which help you with tasks. The helper file can be loaded in controller constructor, some…

Codeigniter | Set timezone To set default timezone in Codeigniter, you can add the date_default_timezone_set() function in your application/config.php or index.php file. date_default_timezone_set('your timezone');   <?php // India timezone date_default_timezone_set('Asia/Kolkata'); ?>  

Codeigniter | SET or GET config variables The config set_item() & item() functions are work for SET and GET a config variable in codeigniter   In Codeigniter by default all config variables are located at “application/config/config.php” file.…

Codeigniter | The default URL pattern In CodeIgniter, URLs are designed to be search-engine and user-friendly. CodeIgniter uses a segment-based approach rather than using "query string" based approach. http://www.example.com/user/edit/rakesh The default URL pattern in CodeIgniter…

Codeigniter | Types of error logging There are three message types in Codeigniter: Error Messages These are actual errors, such as PHP errors or user errors. Debug Messages These are messages that assist in debugging.…

HTML | What is HTML HTML is a web language stands for Hyper Text Markup Language. It was created by Berners-Lee in late 1991. HTML is the standard markup language for creating a web pages…

Codeigniter | Include image, css and js file In codeigniter, we need to load URL helper in controller and then use base_url() function to load the resources. // loading script <script type='text/javascript' src="<?php echo base_url('js/jquery.min.js');…