Sometimes needs to change the URL structure for SEO or other purposes. In that case, the old URL shows 404 error which is very confusing for the website’s visitor. To avoid this situation, you can redirect the old page (non-existing) request to new page URL by the .htaccess file.
Generally, we used radio buttons to let a user select ONE option from a limited number of choices. Most of the cases radio buttons are ideal to select a single option from a group of the options. If you want to allow the user to check only one checkbox from a group of the checkboxes, it can be done easily using jQuery.
It is important to take security seriously when you collecting data from the users. Form data validation is required before submitting to the database. You can implement the client-side form validation easily with HTML5 without using jQuery. Use type and pattern attribute in HTML input field to validate a phone number.
Before submitting the value of the radio button group, it is required to check whether the user selects one radio button in each group. Because it’s always a good idea to validate the value in the client before sending data to the server side. Here we will show you how to check if one radio button in each group is checked using jQuery.
Use of undefined constant VIEWPATH issue occurs when you upgrade your existing CodeIgniter application version to CodeIgniter 3.x. The undefined constant viewpath issue can be easily solved by the following solution. Open the root’s index.php file and specify the view directory to solve this issue.
Code optimization can reduce the execution time of the script. Using the looping statements, you can get an array of a specific key from the multidimensional array. But the same work can be done in a single line of code by array_column() function in PHP.
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