php 关闭错误提示方法总结与性能分析

error_reporting=E_ALL & ~E_NOTICE

error_reporting(E_ALL^E_NOTICE);

找到display_errors = On 修改为 display_errors = off

<?php
//禁用错误报告
error_reporting(0);
//报告运行时错误
error_reporting(E_ERROR | E_WARNING | E_PARSE);
//报告所有错误
error_reporting(E_ALL);
?>

<form name=form3 id=form3 method=post action=4.php>
其他信息1：<input type=text name=other1 />
其他信息2：<input type=text name=other2 />
<input type=hidden name=base1 value=<?php echo $_REQUEST['base1'] ?> />
<input type=hidden name=base2 value=<?php echo $_REQUEST['base2'] ?> />
<input type=hidden name=prcname value=<?php echo $_REQUEST['prcname'] ?> />
<input type=hidden name=price value=<?php echo $_REQUEST['price'] ?> />
<input type=hidden name=prcXH value=<?php echo $_REQUEST['prcXH'] ?> />
<input type=submit value=确定 />
</form>

<?php
$base1=$_REQUEST['base1'];
$base2=$_REQUEST['base2'];
$prcname=$_REQUEST['prcname'];
$price=$_REQUEST['price'];
$prcXH=$_REQUEST['prcXH'];
$other1=$_REQUEST['other1'];
$other2=$_REQUEST['other2'];

$sql1="insert into [base_table](base1,base2) values('{$base1}','{$base2}')";
$sql2="insert into [prc_table](prcname,price,prcXH) values('{$prcname}','{$price}','{$prcXH}')";
$sql3="insert into [other_table](other1,other2) values('{$other1}','{$other2}')";
query($sql1);
query($sql2);
query($sql3);

echo "写入完成";
?>

<?php

class Upload{
 var $saveName;// 保存名
 var $savePath;// 保存路径
 var $fileFormat = array('gif','jpg','doc','application/octet-stream');// 文件格式&MIME限定
 var $overwrite = 0;// 覆盖模式
 var $maxSize = 0;// 文件最大字节
 var $ext;// 文件扩展名
 var $thumb = 0;// 是否生成缩略图
 var $thumbWidth = 130;// 缩略图宽
 var $thumbHeight = 130;// 缩略图高
 var $thumbPrefix = "_thumb_";// 缩略图前缀
 var $errno;// 错误代号
 var $returnArray= array();// 所有文件的返回信息
 var $returninfo= array();// 每个文件返回信息

// 构造函数
// @param $savePath 文件保存路径
// @param $fileFormat 文件格式限制数组
// @param $maxSize 文件最大尺寸
// @param $overwriet 是否覆盖 1 允许覆盖 0 禁止覆盖

 function Upload($savePath, $fileFormat='',$maxSize = 0, $overwrite = 0) {
  $this->setSavepath($savePath);
  $this->setFileformat($fileFormat);
  $this->setMaxsize($maxSize);
  $this->setOverwrite($overwrite);
  $this->setThumb($this->thumb, $this->thumbWidth,$this->thumbHeight);
  $this->errno = 0;
 }

// 上传
// @param $fileInput 网页Form(表单)中input的名称
// @param $changeName 是否更改文件名
 function run($fileInput,$changeName = 1){
  if(isset($_FILES[$fileInput])){
   $fileArr = $_FILES[$fileInput];
   if(is_array($fileArr['name'])){//上传同文件域名称多个文件
    for($i = 0; $i < count($fileArr['name']); $i++){
     $ar['tmp_name'] = $fileArr['tmp_name'][$i];
     $ar['name'] = $fileArr['name'][$i];
     $ar['type'] = $fileArr['type'][$i];
     $ar['size'] = $fileArr['size'][$i];
     $ar['error'] = $fileArr['error'][$i];
     $this->getExt($ar['name']);//取得扩展名，赋给$this->ext，下次循环会更新
     $this->setSavename($changeName == 1 ? '' : $ar['name']);//设置保存文件名
     if($this->copyfile($ar)){
      $this->returnArray[] =  $this->returninfo;
     }else{
      $this->returninfo['error'] = $this->errmsg();
      $this->returnArray[] =  $this->returninfo;
     }
    }
    return $this->errno ?  false :  true;
   }else{//上传单个文件
    $this->getExt($fileArr['name']);//取得扩展名
    $this->setSavename($changeName == 1 ? '' : $fileArr['name']);//设置保存文件名
    if($this->copyfile($fileArr)){
     $this->returnArray[] =  $this->returninfo;
    }else{
     $this->returninfo['error'] = $this->errmsg();
     $this->returnArray[] =  $this->returninfo;
    }
    return $this->errno ?  false :  true;
   }
   return false;
  }else{
   $this->errno = 10;
   return false;
  }
 }

// 单个文件上传
// @param $fileArray 文件信息数组
 function copyfile($fileArray){
  $this->returninfo = array();
  // 返回信息
  $this->returninfo['name'] = $fileArray['name'];
  $this->returninfo['md5'] = @md5_file($fileArray['tmp_name']);
  $this->returninfo['saveName'] = $this->saveName;
  $this->returninfo['size'] = number_format( ($fileArray['size'])/1024 , 0, '.', ' ');//以KB为单位
  $this->returninfo['type'] = $fileArray['type'];
  // 检查文件格式
  if (!$this->validateFormat()){
   $this->errno = 11;
   return false;
  }
  // 检查目录是否可写
  if(!@is_writable($this->savePath)){
   $this->errno = 12;
   return false;
  }
  // 如果不允许覆盖，检查文件是否已经存在
  //if($this->overwrite == 0 && @file_exists($this->savePath.$fileArray['name'])){
  // $this->errno = 13;
  // return false;
  //}
  // 如果有大小限制，检查文件是否超过限制
  if ($this->maxSize != 0 ){
   if ($fileArray["size"] > $this->maxSize){
    $this->errno = 14;
    return false;
   }
  }
  // 文件上传
  if(!@move_uploaded_file($fileArray["tmp_name"], $this->savePath.$this->saveName)){
   $this->errno = $fileArray["error"];
   return false;
  }elseif( $this->thumb ){// 创建缩略图
   $CreateFunction = "imagecreatefrom".($this->ext == 'jpg' ? 'jpeg' : $this->ext);
   $SaveFunction = "image".($this->ext == 'jpg' ? 'jpeg' : $this->ext);
   if (strtolower($CreateFunction) == "imagecreatefromgif"
    && !function_exists("imagecreatefromgif")) {
    $this->errno = 16;
    return false;
   } elseif (strtolower($CreateFunction) == "imagecreatefromjpeg"
    && !function_exists("imagecreatefromjpeg")) {
    $this->errno = 17;
    return false;
   } elseif (!function_exists($CreateFunction)) {
    $this->errno = 18;
    return false;
   }
    
   $Original = @$CreateFunction($this->savePath.$this->saveName);
   if (!$Original) {$this->errno = 19; return false;}
   $originalHeight = ImageSY($Original);
   $originalWidth = ImageSX($Original);
   $this->returninfo['originalHeight'] = $originalHeight;
   $this->returninfo['originalWidth'] = $originalWidth;
   /*
   if (($originalHeight < $this->thumbHeight
    && $originalWidth < $this->thumbWidth)) {
    // 如果比期望的缩略图小，那只Copy
    move_uploaded_file($this->savePath.$this->saveName,
     $this->savePath.$this->thumbPrefix.$this->saveName);
   } else {
    if( $originalWidth > $this->thumbWidth ){// 宽 > 设定宽度
     $thumbWidth = $this->thumbWidth ;
     $thumbHeight = $this->thumbWidth * ( $originalHeight / $originalWidth );
     if($thumbHeight > $this->thumbHeight){// 高 > 设定高度
      $thumbWidth = $this->thumbHeight * ( $thumbWidth / $thumbHeight );
      $thumbHeight = $this->thumbHeight ;
     }
    }elseif( $originalHeight > $this->thumbHeight ){// 高 > 设定高度
     $thumbHeight = $this->thumbHeight ;
     $thumbWidth = $this->thumbHeight * ( $originalWidth / $originalHeight );
     if($thumbWidth > $this->thumbWidth){// 宽 > 设定宽度
      $thumbHeight = $this->thumbWidth * ( $thumbHeight / $thumbWidth );
      $thumbWidth = $this->thumbWidth ;
     }
    }
    */
    $radio=max(($originalWidth/$this->thumbWidth),($originalHeight/$this->thumbHeight));
    $thumbWidth=(int)$originalWidth/$radio;
    $thumbHeight=(int)$originalHeight/$radio;

    if ($thumbWidth == 0) $thumbWidth = 1;
    if ($thumbHeight == 0) $thumbHeight = 1;
    $createdThumb = imagecreatetruecolor($thumbWidth, $thumbHeight);
    if ( !$createdThumb ) {$this->errno = 20; return false;}
    if ( !imagecopyresampled($createdThumb, $Original, 0, 0, 0, 0,
     $thumbWidth, $thumbHeight, $originalWidth, $originalHeight) )
     {$this->errno = 21; return false;}
    if ( !$SaveFunction($createdThumb,
     $this->savePath.$this->thumbPrefix.$this->saveName) )
     {$this->errno = 22; return false;}
   
  }
  // 删除临时文件
  /*
  if(!@$this->del($fileArray["tmp_name"])){
   return false;
  }
  */
  return true;
 }

// 文件格式检查,MIME检测
 function validateFormat(){
  if(!is_array($this->fileFormat)
   || in_array(strtolower($this->ext), $this->fileFormat)
   || in_array(strtolower($this->returninfo['type']), $this->fileFormat) )
   return true;
  else
   return false;
 }
// 获取文件扩展名
// @param $fileName 上传文件的原文件名
 function getExt($fileName){
  $ext = explode(".", $fileName);
  $ext = $ext[count($ext) - 1];
  $this->ext = strtolower($ext);
 }

// 设置上传文件的最大字节限制
// @param $maxSize 文件大小(bytes) 0:表示无限制
 function setMaxsize($maxSize){
  $this->maxSize = $maxSize;
 }
// 设置文件格式限定
// @param $fileFormat 文件格式数组
 function setFileformat($fileFormat){
  if(is_array($fileFormat)){$this->fileFormat = $fileFormat ;}
 }

// 设置覆盖模式
// @param overwrite 覆盖模式 1:允许覆盖 0:禁止覆盖
 function setOverwrite($overwrite){
  $this->overwrite = $overwrite;
 }

// 设置保存路径
// @param $savePath 文件保存路径：以 "/" 结尾，若没有 "/"，则补上
 function setSavepath($savePath){
  $this->savePath = substr( str_replace("\","/", $savePath) , -1) == "/"
  ? $savePath : $savePath."/";
 }

// 设置缩略图
// @param $thumb = 1 产生缩略图 $thumbWidth,$thumbHeight 是缩略图的宽和高
 function setThumb($thumb, $thumbWidth = 0,$thumbHeight = 0){
  $this->thumb = $thumb;
  if($thumbWidth) $this->thumbWidth = $thumbWidth;
  if($thumbHeight) $this->thumbHeight = $thumbHeight;
 }

// 设置文件保存名
// @param $saveName 保存名，如果为空，则系统自动生成一个随机的文件名
 function setSavename($saveName){
  if ($saveName == ''){  // 如果未设置文件名，则生成一个随机文件名
   $name = date('YmdHis')."_".rand(100,999).'.'.$this->ext;
   //判断文件是否存在,不允许重复文件
   if(file_exists($this->savePath . $name)){
    $name = setSavename($saveName);
    }
  } else {
   $name = $saveName;
  }
  $this->saveName = $name;
 }

// 删除文件
// @param $fileName 所要删除的文件名
 function del($fileName){
  if(!@unlink($fileName)){
   $this->errno = 15;
   return false;
  }
  return true;
 }

// 返回上传文件的信息
 function getInfo(){
  return $this->returnArray;
 }

// 得到错误信息
 function errmsg(){
  $uploadClassError = array(
   0 =>'There is no error, the file uploaded with success. ',
   1 =>'The uploaded file exceeds the upload_max_filesize directive in php.ini.',
   2 =>'The uploaded file exceeds the MAX_FILE_SIZE that was specified in the HTML form.',
   3 =>'The uploaded file was only partially uploaded. ',
   4 =>'No file was uploaded. ',
   6 =>'Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3. ',
   7 =>'Failed to write file to disk. Introduced in PHP 5.1.0. ',
   10 =>'Input name is not unavailable!',
   11 =>'The uploaded file is Unallowable!',
   12 =>'Directory unwritable!',
   13 =>'File exist already!',
   14 =>'File is too big!',
   15 =>'Delete file unsuccessfully!',
   16 =>'Your version of PHP does not appear to have GIF thumbnailing support.',
   17 =>'Your version of PHP does not appear to have JPEG thumbnailing support.',
   18 =>'Your version of PHP does not appear to have pictures thumbnailing support.',
   19 =>'An error occurred while attempting to copy the source image .
     Your version of php ('.phpversion().') may not have this image type support.',
   20 =>'An error occurred while attempting to create a new image.',
   21 =>'An error occurred while copying the source image to the thumbnail image.',
   22 =>'An error occurred while saving the thumbnail image to the filesystem.
     Are you sure that PHP has been configured with both read and write access on this folder?',
   );
  if ($this->errno == 0)
   return false;
  else
   return $uploadClassError[$this->errno];
 }
}

?>
如何使用这个类呢？

<?php
//如果收到表单传来的参数，则进行上传处理，否则显示表单
if(isset($_FILES['uploadinput'])){
 //建目录函数，其中参数$directoryName最后没有"/"，
 //要是有的话，以'/'打散为数组的时候，最后将会出现一个空值
 function makeDirectory($directoryName) {
  $directoryName = str_replace("\","/",$directoryName);
  $dirNames = explode('/', $directoryName);
  $total = count($dirNames) ;
  $temp = '';
  for($i=0; $i<$total; $i++) {
   $temp .= $dirNames[$i].'/';
   if (!is_dir($temp)) {
    $oldmask = umask(0);
    if (!mkdir($temp, 0777)) exit("不能建立目录 $temp");
    umask($oldmask);
   }
  }
  return true;
 }

 if($_FILES['uploadinput']['name'] <> ""){
  //包含上传文件类
  require_once ('upload_class.php');
  //设置文件上传目录
  $savePath = "upload";
  //创建目录
  makeDirectory($savePath);
  //允许的文件类型
  $fileFormat = array('gif','jpg','jpge','png');
  //文件大小限制，单位: Byte，1KB = 1000 Byte
  //0 表示无限制，但受php.ini中upload_max_filesize设置影响
  $maxSize = 0;
  //覆盖原有文件吗？ 0 不允许  1 允许
  $overwrite = 0;
  //初始化上传类
  $f = new Upload( $savePath, $fileFormat, $maxSize, $overwrite);
  //如果想生成缩略图，则调用成员函数 $f->setThumb();
  //参数列表: setThumb($thumb, $thumbWidth = 0,$thumbHeight = 0)
  //$thumb=1 表示要生成缩略图，不调用时，其值为 0
  //$thumbWidth  缩略图宽，单位是像素(px)，留空则使用默认值 130
  //$thumbHeight 缩略图高，单位是像素(px)，留空则使用默认值 130
  $f->setThumb(1);
  
  //参数中的uploadinput是表单中上传文件输入框input的名字
  //后面的0表示不更改文件名，若为1，则由系统生成随机文件名
  if (!$f->run('uploadinput',1)){
   //通过$f->errmsg()只能得到最后一个出错的信息，
   //详细的信息在$f->getInfo()中可以得到。
   echo $f->errmsg()."<br>n";
  }
  //上传结果保存在数组returnArray中。
  echo "<pre>";
  print_r($f->getInfo());
  echo "</pre>";
 }
}else{
?>
<form enctype="multipart/form-data" action="" method="POST">
Send this file: <br />
<input name="uploadinput[]" type="file"><br />
<input name="uploadinput[]" type="file"><br />
<input name="uploadinput[]" type="file"><br />
<input type="submit" value="Send File"><br />
</form>
<?php
}

?>

    <mime-mapping>
        <extension>txt</extension>
        <mime-type>application/octet-stream</mime-type>
    </mime-mapping>
    <mime-mapping>
        <extension>jpg</extension>
        <mime-type>application/octet-stream</mime-type>
    </mime-mapping>

header("Content-type:application/octet-stream");
header('Content-Disposition: attachment; filename="downloaded.txt"');

<%@page language="java" contentType="application/x-msdownload" import="java.io.*,java.net.*" pageEncoding="gbk"%><%
　　response.reset();//可以加也可以不加
　　response.setContentType("application/x-download");//设置为下载application/x-download
　　// /../../退WEB-INF/classes两级到应用的根目录下去，注意Tomcat与WebLogic下面这一句得到的路径不同，WebLogic中路径最后没有/
　　ServletContext context = session.getServletContext();
　　String realContextPath = context.getRealPath("")+"\plan\计划数据模板.xls";
　　String filenamedisplay = "计划数据模板.xls";
　　filenamedisplay = URLEncoder.encode(filenamedisplay,"UTF-8");
　　response.addHeader("Content-Disposition","attachment;filename=" + filenamedisplay);
　　OutputStream output = null;
　　FileInputStream fis = null;
　　try
　　{
　　output  = response.getOutputStream();
　　fis = new FileInputStream(realContextPath);
　　byte[] b = new byte[1024];
　　int i = 0;
　　while((i = fis.read(b)) > 0)
　　{
　　output.write(b, 0, i);
　　}
　　output.flush();
　　}
　　catch(Exception e)
　　{
　　System.out.println("Error!");
　　e.printStackTrace();
　　}
　　finally
　　{
　　if(fis != null)
　　{
　　fis.close();
　　fis = null;
　　}
　　if(output != null)
　　{
　　output.close();
　　output = null;
　　}
　　}
　　%>

?$numb=array(
            array(10,15,30),array(10,15,30),array(10,15,30)
);
 
echo count($numb,1);

A.3
B.12
C.6
D.9

<?php
$fruits = array (
    array (1, 2,null,null, 5, 6),
    array (1, 2,null,null, 5, 6),
);

echo(count($fruits[0]));
?>

<?php
$fruits[0][0]=1;
$fruits[0][3]=1;
$fruits[0][4]=1;

echo(count($fruits[0]));
?>