Archive for the ‘php’ Category

I've got many email from people asking for populating triple drop down list from the database without refreshing page using Ajax and PHP after posting the first article related to the ajax dropdown list using php .In this post, I've put three drop down of country , state and city and the drop down's value changes without refreshing the page. Now let show you how to create it quickly. Full story

Getting the extension from a file name or name of the file from the full path is not a big hassle for the experienced programmer but it might be a annoying task for the beginners of PHP. Now let me find the solution for them using two functions of PHP called explode() and pathinfo(). Full story

In your project you might have to run a function or script (.php) file automatically for a various reasons like automatic sending email on birthday or automatically close a auction when the end_time is reached. What to do in that situation? .To do these things automatically, you must have a php file which must contains the code and these files should be called automatically at certain certain time. So how to do that? The answer is Cron Job. Cron job are the cron tab command found in the UNIX or Linux system. Now let's see how can we call the file automatically at certain duration. Let's suppose the duration is one hour, now I'll show you how to setup the the cron-job of every one hour to run a PHP file automatically in the Cpanel of your website. Full story

I've seen that many of my friends are struggling with the uploads of the bigger or larger files in PHP. After looking at their struggle, i'm here to solve the problem of uploading larger or bigger files in PHP. Most of the web servers are configured such a way that a user can only upload the maximum file size of 2MB. So there might be the problem for the people who wants to upload the .pdf file of size around 15MB. But, you can increse the maximum upload file size limit by using .htaccess file. Full story

I've noticed that many of my friends are storing password in database without encrypting them. This is really a bad technique because if somebody who has access of the database can easily know the password of the particular person. The best functions available in PHP for encryption are md5() and sha1(). These both are one way encryping mechanism i.e the string encrypted with md5() or sha1() can't be decrypted to original string. You might be then wondering how to validate the original string with the encrypted string then you can do this by encrypting the original string and compare both string, Full story