php.ini or PHP Configuration File

What is the php.ini file? and where is it?

The php.ini file is an important configuration file of your PHP server.This file location depends on several things : if your are using Linux or Windows, where you installed your webserver, ... the file is always located on the server where the scripts of will run.

It is a configuration file and control some of the settings of interpreter

The configuration file is read when the interpreter starts

Basic important settings:

Language options:

short_open_type_tag: Tell wherther to use sort form(<??>) or not default it is set to '1'.

asp_tags: Enable use of ASP like(<%%>) tags in addition

Resource Limit:

memory_limit: Maximum amount of memory a script can consume. default value is 128MB.

memory_execution_time: Max. execution time of each script, in seconds, default is 30s.

Data handling

register_global:Whether or not EGPCS variables as global variables. by default is off.

post_max_size: Maximum size of POST data that PHP will accept or you can POST through Form. Default Value is 8M.This setting is useful for file.

File upload

file_uploads: Whether or not allow http file uploads. default is ON

upload_tmp_dir:Temporary directory to be used for storing files when doing file upload. Will use system default if not specified.by default it is empty.

upload file max size:The maximum size of file upload. Default is 2 MB.

Others

allow_url_fopen: Whether to allow treatment of URL as files. Default is 'ON'.

session.cache.expire:Documents expire after n minutes default value is 180.

session.gc_maxlifetime:After this number of seconds stored data will be seen as 'garbage' and cleaned up by garbage collection process. Default value is 1440.

session.save_handler: Handler use to store/retrieve session data. Default value is files.