[Php]; PHP is still a constantly developing tool, its function is still constantly being reduced; and the PHP.ini setting change can reflect the considerable change, and before using the new PHP version, study PHP.ini will Benefits ;;;;;;;;;;;;;;;;;; About this file ;;;;;;;;;;;;;;;;;;;; This file control Many views of PHP. In order to let PHP read this file, it must be named; 'php.ini'. PHP will look for this file in these places: the current working directory; environment variable phprc; indicated path; the path specified when compiling. Under Windows, the path to compile is a Windows installation directory. In command line mode, the PHP.INI's lookup path can be replaced with the -c parameter. The syntax of the file is very simple. Blank characters and semicolons ';' starting rows are simply ignored (just like you may; guessing). The chapter title (for example: [foo]) is also simply ignored, even if they may; there is a meaning. ; Indicates that the following syntax is specified: indicating the identifier = value; Directive = value; Indicates that the identifier is * uppercase sensitive * - foo = BAR is different from foo = bar. The value can be a string, a number, a PHP constant (such as: e_all or m_pi), in constant; one (ON, OFF, TRUE, FALSE, YES, NO AND NONE), or an expression (, Such as: e_all & ~ e_notice), or the string ("foo") enclosed with quotation marks ("foo"). ;; The expression of the INI file is limited to the position operator and parentheses. (Bitwise OR; & Bitwise and; ~ bitwise not ;! Boolean NOT ;; Boolean flag can be placed in a state of 1, ON, TRUE or YES. They can be placed in the relationship with 0, OFF, FALSE OR NO. An empty string can be used in the equal sign, or use none keywords: ;; foo =; foo = none; foo = none; set FOO to empty string; foo = "none"; set the foo to string 'none' ;; if you use constants in your value setting, these constants belong to the dynamically transferred extension library (not PHP extension, it is; Zend extension), you can only After transferring these extended lines * * Use these constants. All values set in the php.ini-dist file are the same as the built-in default (this is, if pHP.ini; is not used or you delete these rows, the default value is the same). ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Engage, pHP Scripting Language Engine (PHP Scripting Language Engine) is valid under Apache. Short_open_tag = ON; Allow Identity (this simple representation). Otherwise, only Php and