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PHP. Руководство по PHP. 2005

Using Extensions Пред.

След.

Глава 49. Using Extensions

Depending on the build process you selected, you should either end up

with a new PHP binary to be linked into your Web server (or run as CGI), or with an.so (shared object) file. If you compiled the

example file first_module.c as a shared object, your result file

should be first_module.so. To use it, you first have to copy

it to a place from which it's accessible to PHP. For a simple test procedure,

you can copy it to your htdocs directory and try it with

the source in Прим. 49-1.

If you compiled it into the PHP binary,

omit the call to dl(), as the module's

functionality is instantly available to your scripts.

Внимание

For security reasons, you should not put your

dynamic modules into publicly accessible directories. Even though it can be

done and it simplifies testing, you should put them into a separate directory

in production environments.

Пример 49-1. A test file for first_module.so.

<?php

// remove next comment if necessary

// dl("first_module.so");

$param = 2;

$return = first_module($param);

print("We sent '$param' and got '$return'");

?>

Calling this PHP file in your Web browser should give you the

output shown in Рис. 49-1.

Рисунок 49-1. Output of first_module.php.

If required, the dynamic loadable module is loaded by calling the

dl() function. This function looks for the

specified shared object, loads it, and makes its functions

available to PHP. The module exports the function

first_module(), which accepts a single

parameter, converts it to an integer, and returns the result of the

conversion.

If you've gotten this far, congratulations! You just built your

first extension to PHP.

Пред.

Начало

След.

Creating Extensions

Уровень выше

Troubleshooting

Отвечу на любые вопросы. С уважением, Дмитрий Владимирович.

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