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PHP基础之Autoload_PHP教程

时间:2021-07-01 10:21:17 帮助过:4人阅读

PHP的自动加载autoload机制很重要,这里做2个小练习 原创文章,转载请注明:http://www.cnblogs.com/phpgcs 文件结构如下,2种方式实现自动加载 1,自定义函数 2,spl_autoload_register() liuyuan@ebuinfo:/var/www/phpgcs/php_autoload$ ll ./* -rw-rw-r-- 1 liuyuan liuyuan 800 Feb 19 11:39 ./func_autoload.php -rw-rw-r-- 1 liuyuan liuyuan 906 Feb 19 11:28 ./spl_autoload.php ./include: total 16 drwxrwxr-x 2 liuyuan liuyuan 4096 Feb 19 11:42 ./ drwxrwxr-x 3 liuyuan liuyuan 4096 Feb 19 11:43 ../ -rw-rw-r-- 1 liuyuan liuyuan 142 Feb 19 11:42 aClass.php -rw-rw-r-- 1 liuyuan liuyuan 143 Feb 19 11:42 bClass.php    首先看自定义函数方式: '); print_r(get_included_files()); echo EOL; print get_include_path(); echo EOL; //set_include_path(get_include_path().PATH_SEPARATOR.'/var/www/ly_php/php_spl/include/'); //set_include_path(dirname(__FILE__).'/include'); //set_include_path(dirname(__FILE__).'/include/'); function __autoload($className){ $filename = './include/'.$className.'.php'; //$filename = './include/'.$className.'.php'; //$filename = '/var/www/ly_php/php_spl/include/'.$className.'.php'; if(file_exists($filename)){ include_once $filename; }else{ exit('no file'); } } $a = new aClass(); $b = new bClass(); print_r(get_included_files()); ?>   运行结果如下: + View Code    第二种方式: '); spl_autoload_register(array('myLoader', 'autoload')); /** *__autoload 方法在 spl_autoload_register 后会失效,因为 autoload_func 函数指针已指向 spl_autoload 方法 * 可以通过下面的方法来把 _autoload 方法加入 autoload_functions list */ //spl_autoload_register( '__autoload' ); error_reporting(E_ALL^E_NOTICE^E_WARNING^E_ERROR); error_reporting(E_NOTICE | E_WARNING ); $a = new aClass(); print_r(get_included_files()); echo EOL; $b = new bClass(); echo EOL; ?>   

www.bkjia.comtruehttp://www.bkjia.com/PHPjc/735880.htmlTechArticlePHP的自动加载autoload机制很重要,这里做2个小练习 原创文章,转载请注明:http://www.cnblogs.com/phpgcs 文件结构如下,2种方式实现自动加载 1,...

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