<?php /* *作者:pangmen *日期:2007-11-14 *功能:操作XML文件(增、删、改、查) *版本:正则版 *附:大家可以随意修改此类,合适的话发我一份:) * 我的E-mail:ad2008bobo@yahoo.com.cn */ class OpXML { private $fpath; private $enter; private $root; function __construct($root,$fpath) { $this->fpath=$fpath; $this->root=$root; $this->enter=chr(13).chr(10); $this->checkFile(); } /* *函数名:insert *说明:插入一条记录 */ public function insert($fields) { $content=$this->getFileContent(); preg_match_all('|<key>(\d+?)<\/key>|',$content,$matches); rsort($matches[1]); $newkey=$matches[1][0]+1; $record='<record>'.$this->enter; $record.='<key>'.$newkey.'</key>'.$this->enter; foreach($fields as $k=>$v) { $record.="<$k>$v</$k>".$this->enter; } $record.='</record>'.$this->enter.$this->enter; $this->save(preg_replace('/(?=<\/'.$this->root.'>)/',$record,$content)); return true; } /* *函数名:insertM *说明:插入多条记录,参数类型必须是二维数组 */ public function insertM($arr) { $content=$this->getFileContent(); preg_match_all('|<key>(\d+?)<\/key>|',$content,$matches); rsort($matches[1]); $newkey=$matches[1][0]+1; $record=''; for($i=0;$i<count($arr);$i++) { $record.='<record>'.$this->enter; $record.='<key>'.$newkey.'</key>'.$this->enter; foreach($arr[$i] as $k=>$v) { $record.="<$k>$v</$k>".$this->enter; } $record.='</record>'.$this->enter.$this->enter; $newkey++; } $this->save(preg_replace('/(?=<\/'.$this->root.'>)/',$record,$content)); return true; } /* *函数名:checkFile *说明:如果文件不存在,则创建之,并初始化 * 否则检查文件规则是否被破坏 */ private function checkFile() { if(!file_exists($this->fpath)) { $xmlstr=''; $xmlstr='<?xml version="1.0" encoding="UTF-8"?>'.$this->enter; $xmlstr.='<'.$this->root.'>'.$this->enter.$this->enter; $xmlstr.='</'.$this->root.'>'; $this->save($xmlstr); } else { $content=$this->getFileContent(); $bool_statement=preg_match('/<\?xml version="1\\.0".*?\?>/',$content)==0 ? false : true; $bool_root=preg_match('/<'.$this->root.'>.*<\/'.$this->root.'>/s',$content)==0 ? false : true; preg_match_all('|(<record>(?:.+?)<\/record>)|s',$content,$matches); for($i=0;$i<count($matches[1]);$i++) { $re='/^<record>\\s*<key>(\\d+)<\\/key>\\s*[\\s\\S]*\\s*<\\/record>$/'; $bool_record=preg_match($re,$matches[1][$i],$arr)==0 ? false : true; $keys[]=$arr[1]; if(!$bool_record) break; } rsort($keys); $bool_repeat=preg_match('/(\d),\1/',join(',',$keys),$wb)==0 ? true : false; if(!($bool_statement && $bool_root && $bool_record && $bool_repeat)) { echo '文件规则已被破坏'; exit; } } } /* *函数名:getRecordById *说明:根据主键ID,获取字段信息 */ public function getRecordById($id) { $content=$this->getFileContent(); preg_match('/<record>(\s*<key>'.$id.'<\/key>.+?)<\/record>/s',$content,$matches); preg_match_all('|(<.+</.+>)|',$matches[1],$arr); $arrstr=''; for($i=0;$i<count($arr[1]);$i++) { preg_match('/^.+>(.+)<\/(.+)>/',$arr[1][$i],$farr); $arrstr.="'$farr[2]'=>'$farr[1]'"; if($i<count($arr[1])-1) $arrstr.=','; } eval("\$row=array($arrstr);"); return $row; } /* *函数名:checkFile *说明:根据主键ID,更新字段 */ public function updateRecordById($id,$form_arr=array()) { $content=$this->getFileContent(); foreach($form_arr as $k=>$v) { $re='/(<key>'.$id.'<\/key>[\s\S]*?<'.$k.'>).+?(<\/'.$k.'>)/s'; $content=preg_replace($re,'$'.$v.'$2',$content); } $this->save($content); return true; } public function deleteRecordById($id) { $content=$this->getFileContent(); $content=preg_replace('/<record>\s*<key>'.$id.'+.+?<\/record>(\s)?/s','',$content); $this->save($content); } /* *函数名:getList *说明:获取所有记录,返回一个二维数组 * 先获取所有record记录,再获取字段名和值 */ public function getList() { $content=$this->getFileContent(); $rs=array(); preg_match_all('|<record>(.+?)<\/record>|s',$content,$matches); for($i=0;$i<count($matches[1]);$i++) { preg_match_all('|(<.+</.+>)|',$matches[1][$i],$tmparr); $arrstr=''; for($j=0;$j<count($tmparr[1]);$j++) { preg_match('/^.+>(.+)<\/(.+)>/',$tmparr[1][$j],$farr); $arrstr.="'$farr[2]'=>'$farr[1]'"; if($j<count($tmparr[1])-1) $arrstr.=','; } eval("\$rs[]=array($arrstr);"); } return $rs; } private function getFileContent() { $hd=fopen($this->fpath,'r'); $content=fread($hd,filesize($this->fpath)); fclose($hd); return $content; } private function save($content) { $hd=fopen($this->fpath,'w'); fwrite($hd,$content); fclose($hd); } } ?>
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