标签： 技术

一些常用php的header头

leokim / / PHP 
<?php 
header('HTTP/1.1 200 OK');  // ok 正常访问
header('HTTP/1.1 404 Not Found'); //通知浏览器 页面不存在
header('HTTP/1.1 301 Moved Permanently'); //设置地址被永久的重定向 301
header('Location: http://www.ruonu.com/'); //跳转到一个新的地址
header('Refresh: 10; url=http://www.ruonu.com/'); //延迟转向 也就是隔几秒跳转
header('X-Powered-By: PHP/6.0.0'); //修改 X-Powered-By信息
header('Content-language: en'); //文档语言
header('Content-Length: 1234'); //设置内容长度
header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT'); //告诉浏览器最后一次修改时间
header('HTTP/1.1 304 Not Modified'); //告诉浏览器文档内容没有发生改变
 
###内容类型### 
header('Content-Type: text/html; charset=utf-8'); //网页编码 
header('Content-Type: text/plain'); //纯文本格式 
header('Content-Type: image/jpeg'); //JPG、JPEG  
header('Content-Type: application/zip'); // ZIP文件 
header('Content-Type: application/pdf'); // PDF文件 
header('Content-Type: audio/mpeg'); // 音频文件  
header('Content-type: text/css'); //css文件
header('Content-type: text/javascript'); //js文件
header('Content-type: application/json');  //json
header('Content-type: application/pdf'); //pdf 
header('Content-type: text/xml');  //xml
header('Content-Type: application/x-shockw**e-flash'); //Flash动画 
 
###### 
 
###声明一个下载的文件###
header('Content-Type: application/octet-stream'); 
header('Content-Disposition: attachment; filename="ITblog.zip"'); 
header('Content-Transfer-Encoding: binary'); 
readfile('test.zip');
######
 
###对当前文档禁用缓存###
header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate'); 
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); 
######
 
###显示一个需要验证的登陆对话框###  
header('HTTP/1.1 401 Unauthorized');  
header('WWW-Authenticate: Basic realm="Top Secret"');  
######
 
 
###声明一个需要下载的xls文件###
header('Content-Disposition: attachment; filename=ithhc.xlsx');
header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
header('Content-Length: '.filesize('./test.xls'));  
header('Content-Transfer-Encoding: binary');  
header('Cache-Control: must-revalidate');  
header('Pragma: public');  
readfile('./test.xls');  
######
 
 
?>

form submit 验证

leokim / / Javascript 
<script>
function submitFun(){
    //逻辑判断
    return true; //允许表单提交
    //逻辑判断
    return false;//不允许表单提交
}
</script>
<form onsubmit="reture submitFun();"> //注意此处不能写成 onsubmit="submitFun();"否则将表单总是提交
</form>

图片ajax上传

leokim / / Javascript

用的是CI框架

后端代码：

<?php

class Upload extends MY_Controller {

    function __construct() {
        parent::__construct();
        $this->load->helper(array('form', 'url'));
    }

    function index() {
        $data = array();
        $data['upload_url'] = site_url('upload/ajax_upload');
        $this->load->view('upload', $data);
    }

    function do_upload() {
        $config['upload_path'] = './uploads/';
        $config['allowed_types'] = 'gif|jpg|png';
        $config['max_size'] = '1024';
        $config['max_width'] = '1024';
        $config['max_height'] = '768';
        $this->load->library('upload', $config);

        if (!$this->upload->do_upload('AidImg')) {
            echo("<script>parent.callback('" . $this->upload->display_errors() . "',false)</script>");
            exit;
        } else {
            $data = array('upload_data' => $this->upload->data());
            $img_path = base_url() . 'uploads/';
            echo "<script>parent.callback('" . $data['upload_data']['file_name'] . "',true,'" . $img_path . "')</script>";
            exit;
        }
    }

}

?>

前端代码：

<html>
    <head>
        <title>Upload Form</title>
        <script type="text/javascript" src="<?php echo base_url() ?>access/js/jquery-1.8.0.min.js"></script>
    </head>
    <body>
        <form id="formImg" action="do_upload" method="post" target="hidden_frame" enctype="multipart/form-data">
            <div>
                <input type="hidden" name="sh_id" id="sh_id" value="{$id}">
                <!--这里的{$id}大家可以随便填1个进去-->
                <input id="AidImg" type="file" name="AidImg" onchange="uploadImg()"/>
                <div style="display:none;" id="imgError">图片不可为空</div>
                <iframe style="display:none" name='hidden_frame' id="hidden_frame"></iframe>
                <div><img id="p_img" src="" width="80" height="80"/> </div>

                <span class="help_inline">尺寸：80*80</span>

            </div>
        </form>
    </body>
</html>

<script>
    function uploadImg()
    {
        var names = $("#AidImg").val().split(".");
        if (names[1] != "gif" && names[1] != "GIF" && names[1] != "jpg" && names[1] != "JPG" && names[1] != "png" && names[1] != "PNG")
        {
            $("#imgError").html("<span>" + "图片必须为gif,jpg,png格式" + "</span>");
            $("#formImg .help-inline").hide();
            $("#imgError").show();
            return;
        }
        $("#formImg").submit();
        $("#imgError").show();
        $("#imgError").html("图片上传中ing");
    }

    function callback(message, success, path)
    {
        if (success == false)
        {
            $("#imgError").html("<span>" + message + "</span>");
            $("#imgError").show();
        }
        else {
            $("#imgError").hide();
            $(".fromtrs").show();
            $("#formImg .help-inline").hide();
            var paths = path;
            $("#p_img").attr("src", path + message);
            $("#p_img").attr("imgname", message); //这里由于数据库里只存入图片名称加后缀名，故和路径拆开了
        }
    }
</script>

Using Form-based File Upload in Snoopy

leokim / / PHP

Snoopy is capable of handling form-based file uploads according to RFC's 1867

and 2388.  This note describes how to use Snoopy in a number of different file

upload scenarios.  Snoopy will handle multiple file upload fields per request

and multiple files per field.  Snoopy can also suggest a different filename in

the upload request from the "real" local filename.  Snoopy can also put

Content-type into the file upload request on a per file basis.

 

 

EXAMPLE 1: SIMPLE FILE UPLOAD

 

In this example there is a single field with a single file to be uploaded and

nothing fancy.  Note that it is necessary to call the set_submit_multipart()

function for the file upload to work.  The filename suggested to the server

will be "myfile.txt" since the path will be removed.

 

include "Snoopy.class.inc";

$snoopy = new Snoopy;

 

$upload_url = "http://www.somedomain/upload.cgi";

$upload_vars = array();

$upload_files["FIELD1"] = "/home/me/myfile.txt";

 

$snoopy->set_submit_multipart();

 

if($snoopy->submit($upload_url, $upload_vars, $upload_files))

echo "<PRE>".$snoopy->results."</PRE>\n";

else

echo "error with file upload: ".$snoopy->error."\n";

 

 

 

EXAMPLE 2: MULTIPLE FILES IN A SINGLE FIELD

 

Snoopy will support sending multiple files in response to a single form field.

This example works when sending multiple files to an Apache/PHP server.  Other

servers may not support this in quite the same way.

 

 

include "Snoopy.class.inc";

$snoopy = new Snoopy;

 

$upload_url = "http://www.somedomain/upload.php";

$upload_vars = array();

$upload_files["FIELD1[]"] = array("/home/me/myfile1.txt", "/home/me/myfile2.txt");

 

$snoopy->set_submit_multipart();

 

if($snoopy->submit($upload_url, $upload_vars, $upload_files))

echo "<PRE>".$snoopy->results."</PRE>\n";

else

echo "error with file upload: ".$snoopy->error."\n";

 

 

 

EXAMPLE 3: SPECIFYING FILENAMES and CONTENT TYPES

 

Some hosts are fussy about the filename that is passed to them by the file

upload request.  We can overcome this by getting Snoopy to suggest a different

filename in the request than the "real" local filename.  We can also get

Snoopy to specify an optional content type for each file.  This is achieved by

having each file entry be an array of parameters instead of a simple filename.

 

include "Snoopy.class.inc";

$snoopy = new Snoopy;

 

$upload_url = "http://www.somedomain/upload.cgi";

$upload_vars = array();

$upload_files["FIELD1[]"] = array(

array("name" => "/home/me/myfile1.txt",

     "remotename" => "C:\UPLOAD.TXT",

     "type" => "text/plain"),

 

array("name" => "/home/me/myfile2.tiff",

     "remotename" => "C:\UPLOAD.TIF",

     "type" => "image/tiff")

);

 

$snoopy->set_submit_multipart();

 

if($snoopy->submit($upload_url, $upload_vars, $upload_files))

echo "<PRE>".$snoopy->results."</PRE>\n";

else

echo "error with file upload: ".$snoopy->error."\n";