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php类自动加载器实现方法

WBOY
WBOYOriginal
2016-06-06 19:51:151031browse

这篇文章主要介绍了php类自动加载器实现方法,涉及php针对文件的读

本文实例讲述了php类自动加载器实现方法。分享给大家供大家参考。具体如下:

这里autoload 可兼容以下格式:

Cache_File_Json
class_xxx.php
xxx.class.php
  xxx.php

php代码如下:

function __autoload($className){ $dirs=explode('_',$className); $fileName=array_pop($dirs); //print_r($dirs); $filePath=$fileName; if(is_array($dirs) && (count($dirs) > 0)){ //echo '\n---\n'; print_r($dirs); $dirPath=''; foreach ($dirs as $dir){ if($dir){ $dirPath.=strtolower($dir).DIRECTORY_SEPARATOR; } } $filePath=$dirPath.$fileName.'.php'; }else { if( file_exists('class_'.$fileName.'.php')){ $filePath='class_'.$fileName.'.php'; }else { if( file_exists($fileName.'.class.php')){ $filePath=$fileName.'.class.php'; } else { $filePath=$fileName.'.php'; } } } //var_dump($filePath); require $filePath; }

希望本文所述对大家的php程序设计有所帮助。

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