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In this solution, you will learn how to generate a random, unique, alphanumeric string in PHP. solution 1. PHP 7 standard library provides the random_bytes() function that generates cryptographically secure pseudo-random bytes. The above example will output something similar to: More info here solution 2. A quick, short, and to-the-point answer is: Which will generate …

How to generate a random, unique, alphanumeric string in PHP? Read More »

What’s the correct way to round a PHP string to two decimal places? solution 1. You can use number_format() Example This function returns a string. solution 2. Use round() (use if you are expecting a number in float format only.

problem statement If you have data in a MySQL database. You are sending the user a URL to get their data out as a CSV file. How can you, when they click the link, have a pop-up to download a CVS with the record from MySQL? solution 1 solution 2 Here is an improved version …

Create a CSV File for a user in PHP Read More »

problem statement If you want to print an array to a file, follow the solutions provided below. solution 1 Either var_export or set print_r to return the output instead of printing it. You can then save $results with file_put_contents. Or return it directly when writing to file: solution 2 Try following code.

All you have to do to download a file to your server is by following the solutions provided below. solution 1 Since PHP 5.1.0, file_put_contents() supports writing piece-by-piece by passing a stream-handle as the $data parameter: solution 2

If you need to enable pdo_mysql in the EasyPHP environment, follow the steps below. solution 2 Unlike phpinfo() it will tell if it didn’t find/use a php.ini at all. And you can simply set the location of the php.ini. You’re using the command line version, so using the -c parameter you can specify the location for this particular run, e.g.

This is a question you can read everywhere on the web with various answers: solution 1 People from other scripting languages always think theirs is better because they have a built-in function to do that and not PHP. In fact, it does exist, but few people know it. Meet pathinfo(): This is fast and built-in. pathinfo() can give …

How to get a file’s extension in PHP? Read More »

problem statement If you have a website hosted on a PC and you have no access to. You have an upload form allowing people to upload mp3 files up to 30MB big. Your server-side script is done in PHP. Every time you try to upload a file, receive an error claiming that the file exceeds …

Change the maximum upload file size Read More »

problem statement When you store files like pictures, videos, or other files, yo do not store them in the public folder but in a private folder that is not publicly accessible. Because only certain users should have access to the files. How can you output multiple images from a private folder? solution 1 To speed …

private file handling with laravel Read More »

This solution will guide the method to modify/delete the contents of a text file using PHP. solution 1. Using file_put_contents: If you want to append to the file instead of replacing its contents use: (file_out_contents is the simpler alternative to using the whole fopen complex.) solution 2 Write “” to a file to delete its contents. To delete contents …

File Handling using PHP Read More »