PHP extension Development: The first extension

Let's first assume that the business scenario, which needs to have such an extension, provides a function called ccvita_string, whose primary function is to return a character. (This business scenario is too fake, let's just look at it) the corresponding PHP code might be:

function $str

$result = "<a href=" ' ..;

re Turn $result ;

}

The first step is to generate the code
PHP provides a tool ext_skel similar to the code generator for ease of development and can be found in the instructions.
First we create a file, Ccvita.skel, whose content is

String ccvita_string(string str)

is to tell Ext_skel this thing, we want to do the extension inside there is a function called ccvita_string. And then execute

cd mooenv< Span class= "pun" >/src/php- 5.3. 8/ext/

./ext_skel --extname= ccvita --proto=ccvita skel

CD ccvita/

At this point, the Ccvita code framework for this extension is already out.

Step two, modify the configuration
Then modify the config.m4 file to delete the first dnl of 10, 11, 123.

DNL php_arg_with(Ccvita, for Ccvita support,

DNL Make sure, the comment is aligned:

DNL [ --with-ccvita Include ccvita support])

Revision changed to

php_arg_with (ccvita, for Ccvita support,

make sure that the COM ment is Aligned:

[  --< Span class= "KWD" >with-ccvita             include Ccvita support])

The third step is to realize the function
Modify Source CCVITA.C File
Find the Ccvita_string function modified to

Php_function(ccvita_string)

{

Char *str = NULL;

int argc = Zend_num_args();

int Str_len;

Char *result;

if (zend_parse_parameters(argc tsrmls_cc, "s", &str , &str_len) = = FAILURE)

return;

Str_len = spprintf(&result, 0, "<a href=\"%.78s\ ">link</a > ", str);

Return_stringl(result, str_len, 0);

}

Fourth step, compiling the extension
After saving, start compiling

/usr/local< Span class= "pun" >/php/bin/ phpize

./configure ---php-config=< span class= "str" >/usr/local/php/bin/php-config

make

Fifth step, add the extension
At this point, all goes well, the extension is already in the modules/ccvita.so position. The following is to add this extension to PHP, so that we can invoke the PHP program.

CP Modules/ccvita. So /usr/local/PHP/ext/

Vim /usr/local/php/etc/php. Ini

Extension=/usr/local/PHP/ext/Ccvita. So #在php. ini file last added this line

Service PHP-fpm Restart #重启PHP服务

CP Ccvita. PHP /data/www/wwwroot/default/