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php7扩展自动加载类.

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Release: 2016-06-23 13:31:25
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使用php扩展来开发框架似乎越来越来成来主流了,如phalcon,鸟哥的yaf。这些框架都以高性能著称,相对纯php使用的框架而,php扩展实现的框架更快,不会带来额外的系统消耗。在php启动时便已加载了框架,并且常驻内存。 几乎所有框架都带自动加载类,以便更好的管理代码。php实现方法这里就不多介绍了,读者可以自行百度。这里将介绍如何在php扩展中实现。 扩展中的实现原理与php实现基本原理一致,都是基于 spl_autoload_register 函数实现。

ZEND_METHOD(lxx_request,run) {    zval arg;//参数    zval * pthis = getThis();//当前类    array_init(&arg);//初始化数据,    Z_ADDREF_P(pthis);    add_next_index_zval(&arg, pthis);    add_next_index_string(&arg, "load");//当前类的中load的方法,表态方法(ZEND_ACC_STATIC)    /*zend_call_method_with_1_params arg为数组参娄 php 代码spl_autoload_register(['lxx\request','load']);*/    zend_call_method_with_1_params(NULL, NULL, NULL, "spl_autoload_register", NULL, &arg);   zval_ptr_dtor(&arg);}/*字符替换*/static void str_replace(char *str,char o,char n) {    while(*str != '\0') {        if (*str == o) {            *str = n;        }        str++;    }} ZEND_METHOD(lxx_request,load) {    zend_string *cl;       /*php7中新增的数据类型 全用大写S接收,小写s则char指针*/    long cl_len = 0;    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "S", &cl) == FAILURE) {        RETURN_FALSE;    }    zend_file_handle zfd;    zend_op_array *op_array;    smart_str str = {0};    smart_str_appendl(&str,cl->val,cl->len);    smart_str_appendl(&str,".php",sizeof(".php")-1);    smart_str_0(&str);    str_replace(str.s->val,'\\','/');    zfd.type = ZEND_HANDLE_FILENAME;    zfd.filename = str.s->val;    zfd.free_filename = 0;    zfd.opened_path = NULL;    zfd.handle.fp = NULL;    op_array = zend_compile_file(&zfd,ZEND_INCLUDE);     if (zfd.opened_path) {        zend_hash_add_empty_element(&EG(included_files),zfd.opened_path);    }    zend_destroy_file_handle(&zfd);    if(op_array) {        zend_execute(op_array,NULL);        //zend_exception_restore();        destroy_op_array(op_array);        efree(op_array);    }    //zend_printf("<BR>%s 有没有啊?帅不帅啊?",str.s->val);    zend_string_release(cl);    smart_str_free(&str);}
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注册当前类

ZEND_MODULE_STARTUP_D(lxx_request) {    zend_class_entry ce;    memset(&ce,0,sizeof(zend_class_entry));    INIT_CLASS_ENTRY(ce,"Lxx\\request",lxx_request_functions);    lxx_request_ce = zend_register_internal_class_ex(&ce,NULL);    //lxx_request_ce->ce_flags = ZEND_ACC_EXPLICIT_ABSTRACT_CLASS;}
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测试

$cl = new Lxx\request();$cl->run();$ab = new abc\ab();echo $ab->test("lxx");
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在abc目录下建立ab.php

namespace abc;class ab {    //php7新特性写法,    public function test(string $name) :string {         return "Hi : ".$name;    }}
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输出

Hi : lxx
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源文来自:www.lxxbl.com

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