How to write a PHP extension under Linux
This article mainly explains "how to write a PHP extension under Linux". The explanation in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian slowly and deeply to study and learn "how to write a PHP extension under Linux" together!
hypothetical demand
Develop an extension called helloWord.
There is a function called helloWord().
echo helloWord ('Tom ');//returns: Hello World: Tom
local environment
PHP version: 5.6.9
Linux CentOS release 6.5 (Final)
final effect
realization flow
Step 1:
Go to the local php directory and execute: cd /root/soft/src/php-5.6.9cd ext./ ext_skel --extname=helloWordcd helloWordvi config.m4 Search: dnl Otherwise use enable Modify the following to: PHP_ARG_ENABLE(helloWorld, whether to enable helloWorld support,[ --enable-helloWorld Enable helloWorld support])if test "$PHP_HELLOWORLD" != "no"; then...
As shown in the figure:
Step 2:
vi php_helloWorld.h Search: extern zend_module_entry Add a new line: PHP_FUNCTION(helloWorld);
As shown in the figure:
Step 3:
vi helloWorld.c Search: const zend_function_entry helloWorld_functions[] Add a new line: PHP_FE(helloWorld, NULL)
As shown in the figure:
Add a method PHP_FUNCTION(helloWorld){ char *arg = NULL; int arg_len, len; char *strg; if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &arg, &arg_len) == FAILURE) { return; } len = spprintf(&strg, 0, "Hello World: %s", arg); RETURN_STRINGL(strg, len, 0);}
As shown in the figure:
Step 4:
//compile install cd /root/soft/src/php-5.6.9/ext/usr/local/php/bin/phpize #generate configure configuration file with phpize./ configure --with-php-config=/usr/local/php/bin/php-config #configure make #compile make install #install
Step 5:
//modify php.iniextension="helloWorld.so" #Name is the name of the installation extension
Step 6:
Restart the environment.
After completing the above steps, the simple helloWorld extension is OK.
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