php 用txt文本文件做数据库程序_PHP教程-tutorial php-php.cn

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php 用txt文本文件做数据库程序_PHP教程

Jul 20, 2016 am 11:07 AM

define php txt buat pangkalan data dokumen teks guna program

define ("tblPath",".");
define ("exten",".php");
define ("fileHead"," echo "You are wellcome!"?".">This file only for class txtTbl");
class txtTbl {
var $innerName=""; //数据库名称
var $innerCount; //数据库记录数目
var $innerFields; //数据库字段列表数组
var $inner_F_Count; //数据库字段数目
var $fullName; //完整的文件名
var $isModify = false; //当前记录是否被修改
var $fileModify = false; //数据库是否被修改
var $innerRecorders; //数据库记录数组
var $curLine; //当前记录号
var $curArray; //当前行数组
var $stringDel; //保存被删除记录
var $sprt1; //数据库记录间的分隔符
var $sprt2; //数据库字段间的分隔符
var $innerBof = true;
var $innerEof = false;

$this->innerName = $tblName;
$this->sprt1 = $sprt1;
$this->sprt2 = $sprt2;

if ($this->innerCount==0){
$this->curLine = 0;
$this->innerEof = true;
}else{
$this->curLine = 1;
// if ($this->innerCount==1) $this->innerEof = true;
if (!$this->initRec()) return false;
}

return true;
}

function bof(){
   if (empty($this->innerName)){
    return true;
   }else return $this->innerBof;
}

function recNo(){
return $this->curLine;
}

function recCount(){
return $this->innerCount;
}

function fieldsCount(){
   if (empty($this->innerName)){
    return false;
   }else return $this->inner_F_Count;
}

",$sprt2="",$sprt3="",$sprt4=""){
echo $sprt3;
foreach($this->curArray as $v){
if($shownon==1&&empty($v)) $v= "noValue";
echo $sprt1.$v.$sprt2;
}
echo $sprt4;
}

//保存修改
function saveModify(){
if($this->isModify){
   $this->innerRecorders[$this->curLine]= implode($this->sprt2,$this->curArray);
   $this->isModify = false;
   $this->fileModify= true;
}
}

//当指针发生变化时，初始化当前记录数组
function initRec(){
$this->curArray = explode($this->sprt2,$this->innerRecorders[$this->curLine]);
if (count($this->curArray)!=$this->innerFieldsCount){
   echo "The Current Recorder fields count unequal to Table's.n File will close.";
   $this->close();
   return false;
}
return true;
}

//输出当前记录信息，设计为调试用
function ddisplay(){
if ($this->innerCount==0) return false;
foreach($this->innerFields as $v) echo $v."----";
echo "
";
foreach($this->curArray as $v) echo $v."---";
}

//检查记录是否已被删除
function chkDel($key){
if (empty($key)&&$key!=0){
   echo "the key not appoint.";
   return false;
}
if (!isset($this->stringDel)){
   return false;
}
if (ereg("(^|,)".$key."(,|$)",$this->stringDel)){
   return true;
}
return false;
}

//检查提交的字段名是否合法.
function chkField($field){
if (empty($field)&&($field!=0)){
   echo "the field not appoint.";
   return -1;
}
$vartype = gettype($field);
switch ($vartype) {
   case "integer":
    if ($field>=$this->innerFieldsCount){
        echo "the field is large than fieldscount";
        return -1;
    }elseif($field     echo "the field is less than 0";
     return -1;
    }
    return $field;
case "string":
   foreach ($this->innerFields as $k=>$v) if ($field==$v) return $k;
   echo "the field name not found.";
   return -1;
default:
   echo "the field is invalid.";
   return -1;
}
}

}

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