ini_set function in PHP to change the configuration settings at php.ini file

Change a runtime setting with ini_set()

ini_set() changes a configuration directive for the current script when that directive is changeable at runtime. The setting normally returns to its configured value after the request ends.

<?php
$old = ini_set('memory_limit', '256M');
echo ini_get('memory_limit');

Getting & setting PHP values of php.ini and getting server, operating system & PHP details to Manage

We can't change all the configured settings of php.ini file. PHP will permit to change some data by using ini_set function. We will verify after changing the configured data by using ini_get function. Here is the code. Please note the outputs shown here will change based on your server settings when you try.

echo ini_get('memory_limit');  // OUTPUT 60
ini_set('memory_limit','256M');
echo "<br>";
echo ini_get('memory_limit');  // output 100

We can change some of the configuration options by using ini_set() during the script execution. We can’t change permanently the setting by using ini_set(). Values will return to original value once the script execution is over.
ini_loaded_file():Path of php.ini file Introduction to PHP Collect all PHP settings by phpinfo() ini_get() Guide to installation and How to write our first PHP Script

Subhendu Mohapatra

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infinity	08-04-2011
this is not done plz give us brief discription of ini_set functions limit

ini_set to update settings of php.ini file

Change a runtime setting with ini_set()

Subhendu Mohapatra