php学习笔记之PHP扩展开发教程
PHP扩展开发不是所有开发者都会操作的一个东西,下面我来演示一个关于PHP扩展开发实现过程,各位同学有需要可进入参考。
我们先假设需要这样一个扩展,提供一个叫tao_string的函数,他的主要作用是返回一段字符。对应的PHP代码可能是这样:
代码如下 | 复制代码 |
function tao_string($str){ |
第一步,生成代码
PHP为了扩展开发的方便,提供了一个类似代码生成器的工具ext_skel,具体可以参见php.net官方的说明 (https://svn.php.net/repository/php/php-src/trunk/README.EXT_SKEL)。
创建一个文件tao.skel,它的内容为
string tao_string(string str)
就是告诉ext_skel这个东西,我们要做的扩展里面有个函数叫tao_string。然后执行
代码如下 | 复制代码 |
cd MooENV/src/php-5.3.8/ext/ |
这时候,tao这个扩展的代码框架就已经出来了。
第二步,修改配置
然后修改config.m4文件将10、11、12三行最前面的dnl删除掉,就是将
代码如下 | 复制代码 |
dnl PHP_ARG_WITH(tao, for tao support, 修改为 PHP_ARG_WITH(tao, for tao support, |
第三步,实现功能
修改源码tao.c文件
找到将tao_string这个函数修改为
代码如下 | 复制代码 |
PHP_FUNCTION(tao_string) if (zend_parse_parameters(argc TSRMLS_CC, "s", &str, &str_len) == FAILURE) str_len = spprintf(&result, 0, "wo shi %.78s", str); |
第四步,编译扩展
保存后,开始编译
代码如下 | 复制代码 |
/usr/local/php/bin/phpize |
第五步,添加扩展
这时候,一切顺利的话,该扩展已经在modules/tao.so这个位置了。下面就是将这个扩展加入到PHP中去,让我们PHP程序可以调用到。
代码如下 | 复制代码 |
cp modules/tao.so /usr/local/php/ext/ |
接下来就可以访问tao.php这个文件,测试了

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