What is a PHP read file?

PHP read file is a function of a PHP file where the computer system can read the information in a file and write the information to an output function. This function allows users to simply read the information contained in a file without causing any programming changes.

PHP read file returns the exact number of bytes in the file. Other returns include "false" if the function fails and "error" if there are issues with the file attempting to be accessed. Using a PHP read file does not hamper the memory on the computer, even with the transmission of large files. If a memory error does appear, make sure that output buffering is turned off.