How to write PHP extensions in C language in the detailed _php skills

1: Predefined
In the home directory, you can also write a file in any other directory, such as Caleng_module.def
The content is the name of the function you want to define and the parameters:
int a (int x,int y)
String B (String str,int N)

2: To the PHP source directory of the Ext directory
#cd/usr/local/php-5.4.0/ext/

Execute command to generate corresponding extended directory
#./ext_skel--extname=caleng_module--proto=/home/hm/caleng_module.def

3: Modify the CONFIG.M4
Get rid of DNL notes

Php_arg_enable (Caleng_module, whether to ENABLE caleng_module support,
Make sure this comment is aligned:
[--enable-caleng_module enable caleng_module support])

4: Modify the CALENG_MODULE.C

Copy Code code as follows:

/* {{proto int a (int x, int y)
*/
Php_function (a)
{
int argc = Zend_num_args ();
int x;
int y;
int z;
if (Zend_parse_parameters (argc tsrmls_cc, "ll", &x, &y) = = failure)

Return
Z=x+y;
Return_long (z);
}
/* }}} */
/* {{proto string B (string str, int n)
*/
Php_function (b)
{
char *str = NULL;
int argc = Zend_num_args ();
int str_len;
Long N;
Char *result;
Char *ptr;
int result_length;

if (Zend_parse_parameters (argc tsrmls_cc, "SL", &str, &str_len, &n) = = failure)
Return
Result_length = Str_len * N;
result = (char *) emalloc (result_length + 1);
ptr = result;
while (n--) {
memcpy (PTR, str, str_len);
PTR + = Str_len;
}
*ptr = ' n ';
Return_stringl (result, result_length, 0);
}
/* }}} */

5: Build the extension library
#cd./caleng_module
#/usr/local/php/bin/phpize
#./configure--with-php-config=/usr/local/php/bin/php-config
#make
#make Install

6: to the corresponding extensions directory of PHP
As shown in the figure above
#cd/usr/local/php/lib/php/extensions/no-debug-non-zts-20100525/
There are generated caleng_module.so files under the modified directory

7: Modify the PHP.ini
PHP.ini If you cannot find a message that can be typed from phpinfo ()
#cd/usr/local/php/lib/
PHP.ini Add extended information
Extension=caleng_module.so

8: Restart Apache
#/usr/local/apache2/bin/apachectl Restart

9: Check Load
/usr/local/php/bin/php-m

10:php Call

Copy Code code as follows:

echo A (1,2);

Output 3 is a success!
=================================
The following is the original
Linux Development with C PHP extension
First, download the PHP source code package, assuming the source package directory:/software/php-5.2.13
First, download the PHP source code package, assuming the source package directory:/software/php-5.2.13
#> Cd/software/php-5.2.13/ext
Second, suppose we want to develop an extension called Caleng_module, which contains two functions: a--processing Two integer addition and B-processing string repeat output;
1, first write a function definition file, the file to write the function prototype suffix to Def, assuming: caleng_module.def
int a (int x, int y)
String B (String str, int n)
2, through the extension skeleton generator, will be in the EXT directory automatically set up the extended directory Caleng_module
#>./ext_skel--extname=caleng_module--proto=caleng_module.def
3, modify the configuration file: #> vim/software/php-5.2.13/ext/caleng_module/config.m4, the following line of the annotation label "DNL" removed, the following changes are as follows:
Php_arg_enable (myfunctions, whether to ENABLE myfunctions support,
Make sure this comment is aligned:
[--enable-myfunctions enable myfunctions support])
4, the function of perfecting function A and B: #> vim/software/php-5.2.13/ext/caleng_module/caleng_module.c
Php_function (a)
{
int x, y, Z;

int argc = Zend_num_args ();

if (Zend_parse_parameters (argc tsrmls_cc, "ll", &x, &y) = = failure)
Return
z = x + y;
Return_long (z);
}
Php_function (b)
{
char *str = NULL;
int argc = Zend_num_args ();
int str_len;
Long N;
Char *result;
Char *ptr;
int result_length;

if (Zend_parse_parameters (argc tsrmls_cc, "SL", &str, &str_len, &n) = = failure)
Return
Result_length = Str_len * N;
result = (char *) emalloc (result_length + 1);
ptr = result;
while (n--) {
memcpy (PTR, str, str_len);
PTR + = Str_len;
}
*ptr = ' n ';
Return_stringl (result, result_length, 0);
}
Third, compile the installation, assuming PHP installation directory is:/usr/localhost/webserver/php
#> Cd/software/php-5.2.13/ext/caleng_module
#>/usr/localhost/webserver/php/bin/phpize
#>./configure--with-php-config=/usr/localhost/webserver/php/bin/php-config
#> make
#> make Install
The caleng_module.so file will now be generated in the/usr/local/webserver/php/lib/php/extensions/no-debug-non-zts-20060613 directory
In the php.ini configuration file, add: extension=caleng_module.so.
Finish the call.