php image_type_to_mime_type

php image_type_to_mime_type

image_type_to_mime_type - 获取MIME的图像类型和getimagesize返回类型，exif_read_data，exif_thumbnail，本函数

<?php
$filename = 'http://111cn.net/banner/banner.gif';
$size = getimagesize($filename);

switch ($size['mime']) {
    case "image/gif":
        echo "Image is a gif";
        break;
    case "image/jpeg":
        echo "Image is a jpeg";
        break;
    case "image/png":
        echo "Image is a png";
        break;
    case "image/bmp":
        echo "Image is a bmp";
        break;
}
?>

<?php
print image_type_to_mime_type(IMAGETYPE_ICO);
// returns: application/octet-stream
?>

ajax+php检测文章标题是否存在代码
php代码
function checkTitle()
 {
  $title = PostGet('title');
  if( empty( $title ) )
  {
   return false;
  }
  else
  {
   $Db = new Db();
   $row = $Db->query("Select * from news where title ='$title'");
   if( $Db->rows( $row ) )
   {
    echo 1;
   }
   else
   {
    return NULL;
   }
  }
 }
js代码
function createXMLHttpRequest(){//创建XMLHttpRequest对象
 if(window.ActiveXObject){//IE
  try {
   return new ActiveXObject("Microsoft.XMLHTTP");
  } catch(e){
   return;
  }
 }else if(window.XMLHttpRequest){//Mozilla,firefox
  try {
   return new XMLHttpRequest();
  } catch(e){
   return;
  }
 }
}

function getreNews(Value){//主调函数
 var xmlHttp=createXMLHttpRequest();
 var url = "public.php?action=check&title="+Value+"&mt="+Math.random(300000);
 if (Value==""){  
  return false ;
 }
 if (xmlHttp){
  callback = getReadyStateHandler(xmlHttp);
  xmlHttp.onreadystatechange = callback;
  xmlHttp.open("GET", url,true);
  xmlHttp.send(null);
 }
}

function getReadyStateHandler(xmlHttp){//服务器返回后处理函数
 return function (){
  if(xmlHttp.readyState == 4){
   if(xmlHttp.status == 200){
       
     if (xmlHttp.responseText==1){
       document.getElementById("checkid").innerHTML="<font color='red'><img src=../img/e.gif />对不起，你输入的标题存在重复哦！</font>";     
     }else{
      document.getElementById("checkid").innerHTML="<img src=../img/g.gif />";     
     }      
   }
  }
 }
}

html代码

<input name="title" type="text" id="title" size="60" onblur="getreNews(this.value);" />
<span id="checkid"></span>

这一句了，简单吧。

php Curl保存远程服务器图片

function LoadImageCURL($save_to){
        $ch = curl_init($this->source);
        $fp = fopen($save_to, "wb");
       
        // set URL and other appropriate options
        $options = array(CURLOPT_FILE => $fp,
                         CURLOPT_HEADER => 0,
                         CURLOPT_FOLLOWLOCATION => 1,
                         CURLOPT_TIMEOUT => 60); // 1 minute timeout (should be enough)
       
        curl_setopt_array($ch, $options);
       
        curl_exec($ch);
        curl_close($ch);
        fclose($fp);

    }

$info = @GetImageSize($this->source);
    $mime = $info['mime'];
   
// What sort of image?
    $type = substr(strrchr($mime, '/'), 1);
    switch ($type){
        case 'jpeg':
            $image_create_func = 'ImageCreateFromJPEG';
            $image_save_func = 'ImageJPEG';
            $new_image_ext = 'jpg';
       
            // Best Quality: 100
            $quality = isSet($this->quality) ? $this->quality : 100;
            break;
       
        case 'png':
            $image_create_func = 'ImageCreateFromPNG';
            $image_save_func = 'ImagePNG';
            $new_image_ext = 'png';
       
            // Compression Level: from 0  (no compression) to 9
            $quality = isSet($this->quality) ? $this->quality : 0;
            break;
       
        case 'bmp':
            $image_create_func = 'ImageCreateFromBMP';
            $image_save_func = 'ImageBMP';
            $new_image_ext = 'bmp';
            break;
       
        case 'gif':
            $image_create_func = 'ImageCreateFromGIF';
            $image_save_func = 'ImageGIF';
            $new_image_ext = 'gif';

            break;
       
        case 'vnd.wap.wbmp':
            $image_create_func = 'ImageCreateFromWBMP';
            $image_save_func = 'ImageWBMP';
            $new_image_ext = 'bmp';
            break;
       
        case 'xbm':
            $image_create_func = 'ImageCreateFromXBM';
            $image_save_func = 'ImageXBM';
            $new_image_ext = 'xbm';
            break;
       
        default:
            $image_create_func = 'ImageCreateFromJPEG';
            $image_save_func = 'ImageJPEG';
            $new_image_ext = 'jpg';
    }
   
    if(isSet($this->set_extension)){
        $ext = strrchr($this->source, ".");
        $strlen = strlen($ext);
        $new_name = basename(substr($this->source, 0, -$strlen)).'.'.$new_image_ext;
    }else{
        $new_name = basename($this->source);
    }
   
    $save_to = $this->save_to."/blog_insert_temp_".time().mt_rand(1,99).".".$new_image_ext;
    //输出对象 组成跟$_FILE变量一样 得到后自己和平常图片上传处理一样了
    $img_info['name'] = basename($this->source);
    $img_info['type'] = $mime;
    $img_info['size'] = 1000;
    $img_info['tmp_name'] = $save_to;
    $img_info['error'] = 0;
       
    if($method == 'curl'){
        $save_image = $this->LoadImageCURL($save_to);
    }elseif($method == 'gd'){
        $img = $image_create_func($this->source);
   
            if(isSet($quality)){
               $save_image = $image_save_func($img, $save_to, $quality);
            }else{
               $save_image = $image_save_func($img, $save_to);
            }
          
    }
         return $img_info;
    }

php 正则html网址代码

$pattern = "/[w-]+.(com|net|org|gov|cc|biz|info|cn)(.(cn|hk))*/";
    preg_match($pattern, $url, $matches);
    if(count($matches) > 0) {
        return $matches[0];
    }else{
        $rs = parse_url($url);
        $main_url = $rs["host"];
        if(!strcmp(long2ip(sprintf("%u",ip2long($main_url))),$main_url)) {
            return $main_url;
        }else{
            $arr = explode(".",$main_url);
            $count=count($arr);
            $endArr = array("com","net","org","3322");//com.cn  net.cn 等情况
            if (in_array($arr[$count-2],$endArr)){
                $domain = $arr[$count-3].".".$arr[$count-2].".".$arr[$count-1];
            }else{
                $domain =  $arr[$count-2].".".$arr[$count-1];
            }
            return $domain;
        }// end if(!strcmp...)
    }// end if(count...)
}// end function

if ($insert && $insertsql) {php 批量保存数据与批量更新数据
  $keystr = $valstr = $tmp = '';
  foreach($insertsql as $key => $val) {
   if ($val) {
    $keystr .= $tmp.$key;
    $valstr .= $tmp."'".addslashes($val)."'";
    $tmp = ',';
   }
  }
  if ($keystr && $valstr) {
   dbconn($dbhost,$dbuser,$dbpass,$dbname,$charset,$dbport);
   m(q("INSERT INTO $tablename ($keystr) VALUES ($valstr)") ? 'Insert new record of success' : mysql_error());
  }
 }
 if ($update && $insertsql && $base64) {
  $valstr = $tmp = '';
  foreach($insertsql as $key => $val) {
   $valstr .= $tmp.$key."='".addslashes($val)."'";
   $tmp = ',';
  }
  if ($valstr) {
   $where = base64_decode($base64);
   dbconn($dbhost,$dbuser,$dbpass,$dbname,$charset,$dbport);
   m(q("UPDATE $tablename SET $valstr WHERE $where LIMIT 1") ? 'Record updating' : mysql_error());
  }
 }