php manual PHP Manual -

PHP, short for "PHP: Hypertext Preprocessor", is an open-source, reflective programming language used mainly for developing server-side applications and dynamic web content, and more recently, other software.

PHP allows interaction with a large number of relational database management systems, such as MySQL, Oracle, IBM DB2, Microsoft SQL Server, PostgreSQL and SQLite. PHP runs on most major operating systems, including UNIX, Linux, Windows, and Mac OS X, and can interact with many major web servers. The official PHP website contains extensive documentation.

There is a command line interface, as well as GUI libraries such as the Gimp Tool Kit (GTK+) and text mode libraries like Ncurses and Newt.

PHP is the result of the efforts of many contributors. It is licensed under the PHP License, a BSD-style license. Since version 4, it has been powered by the Zend engine.

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Macros for Automatic Global Variable Creation

Macros for Automatic Global Variable Creation

In addition to the macros discussed earlier, a few macros allow easy creation of simple global variables. These are nice to know in case you want to introduce global flags, for example. This is somewhat bad practice, but Table Tabela 53-5 describes macros that do exactly this task. They don't need any zval allocation; you simply have to supply a variable name and value.

Tabela 53-5. Macros for Global Variable Creation

SET_VAR_STRING(name, value)Creates a new string.
SET_VAR_STRINGL(name, value, length)Creates a new string of the specified length. This macro is faster than SET_VAR_STRING and also binary-safe.
SET_VAR_LONG(name, value)Creates a new long.
SET_VAR_DOUBLE(name, value)Creates a new double.