php中检查 url 链接是否已经有参数，添加 ? 或 &代码

header('Content-type: text/json');

< ?php
header('Content-type: text/json');

$fruits = array (
    "fruits"  => array("a" => "orange", "b" => "banana", "c" => "apple"),
    "numbers" => array(1, 2, 3, 4, 5, 6),
    "holes"   => array("first", 5 => "second", "third")
);
echo json_encode($fruits);
?>

$(function(){
     $('#send').click(function() {
          $.getJSON('http://blog.meituo.net/wp-content/uploads/php_return_json/test.js', function(data) {
              $('#resText').empty();
   var html = '';
   $.each( data  , function(commentIndex, comment) {
    html += '<div class="comment"><h6>' + comment['username'] + ':</h6><p class="para">' + comment['content'] + '</p></div>';
   })
  $('#resText').html(html);
         })
    })
})

<?php
 
//获取文件夹大小
function dir_size($dir) {
    if (!preg_match('#/$#', $dir)) {
        $dir .= '/';
    }
    $totalsize = 0;
    //调用文件列表
    foreach (get_file_list($dir) as $name) {
        $totalsize += (@is_dir($dir.$name) ? dir_size("$dir$name/") :
            (int)@filesize($dir.$name));
    }
    return $totalsize;
}
 
//获取文件列表
function get_file_list($path) {
    $f = $d = array();
    //获取所有文件
    foreach (get_all_files($path) as $name) {
        if (@is_dir($path.$name)) {
            $d[] = $name;
        } else if (@is_file($path.$name)) {
            $f[] = $name;
        }
    }
    natcasesort($d);
    natcasesort($f);
    return array_merge($d, $f);
}
 
//获取所有文件
function get_all_files($path) {
    $list = array();
    if (($hndl = @opendir($path)) === false) {
        return $list;
    }
    while (($file=readdir($hndl)) !== false) {
        if ($file != '.' && $file != '..') {
            $list[] = $file;
        }
    }
    closedir($hndl);
    return $list;
}
 
//转换单位
function setupSize($fileSize) {
    $size = sprintf("%u", $fileSize);
    if($size == 0) {
        return("0 Bytes");
    }
    $sizename = array(" Bytes", " KB", " MB", " GB", " TB", " PB", " EB", " ZB", " YB");
    return round($size/pow(1024, ($i = floor(log($size, 1024)))), 2) . $sizename[$i];
}
 
//目录
$path = './test_dir/';
 
//显示文件列表
print_r(get_file_list($path)).'<br>';
 
//显示文件大小
echo dir_size($path).'<br>';
 
//显示转换过单位的大小
echo setupSize(dir_size($path));
 
?>

<?php

function getDirSize($dir)
    {
        $handle = opendir($dir);
        while (false!==($FolderOrFile = readdir($handle)))
        {
            if($FolderOrFile != "." && $FolderOrFile != "..")
            {
                if(is_dir("$dir/$FolderOrFile"))
                {
                    $sizeResult += getDirSize("$dir/$FolderOrFile");
                }
                else
                {
                    $sizeResult += filesize("$dir/$FolderOrFile");
                }
            }   
        }
        closedir($handle);
        return $sizeResult;
    }

    // 单位自动转换函数
    function getRealSize($size)
    {
        $kb = 1024;         // Kilobyte
        $mb = 1024 * $kb;   // Megabyte
        $gb = 1024 * $mb;   // Gigabyte
        $tb = 1024 * $gb;   // Terabyte
       
        if($size < $kb)
        {
            return $size." B";
        }
        else if($size < $mb)
        {
            return round($size/$kb,2)." KB";
        }
        else if($size < $gb)
        {
            return round($size/$mb,2)." MB";
        }
        else if($size < $tb)
        {
            return round($size/$gb,2)." GB";
        }
        else
        {
            return round($size/$tb,2)." TB";
        }
    }

    echo getRealSize(getDirSize(dirname($_SERVER[SCRIPT_FILENAME])./include/));

?>

#########################################################

//function dirsize($dir)
//{
//   $handle=opendir($dir);
//   $size = 0;
//   while ( $file=readdir($handle) )
//   {
//       if ( ( $file == "." ) || ( $file == ".." ) ) continue;
//       if ( is_dir("$dir/$file") )
//           $size += dirsize("$dir/$file");
//       else
//           $size += filesize("$dir/$file");
//   }
//   closedir($handle);
//   return $size;
//}
//$big=dirsize(dirname($_SERVER[SCRIPT_FILENAME])."/");
//echo $big;

<title>上传文件</title> 
 
<script> 
function CallbackFunction(str){ 
alert("上传成功"); 
} 
</script> 
<form action="uploadfile.php" enctype="multipart/form-data" method="post" target="iframeUpload"> 
 <iframe name="iframeUpload" src="" width="350" height="35" frameborder=0  SCROLLING="no" style="display:NONE"></iframe> 
 <input id="test_file" name="test_file" type="file"> 
 <input value="上传文件" type="submit"> 
</form> 

<?php 
set_time_limit(0); 
if($_SERVER['REQUEST_METHOD']=='POST') { 
  move_uploaded_file($_FILES["test_file"]["tmp_name"], 
  dirname($_SERVER['SCRIPT_FILENAME'])."/UploadTemp/" . $_FILES["test_file"]["name"]); 
  echo "<script>window.parent.CallbackFunction();</script>"; 
} 
?>

if($result)    
{   
echo "上传成功!文件路径为：".$file2;   
echo '<input name="img" type="hidden" value="'.$file2.'" id="img"/>';   
echo'<script>parent.document.form1.img.value=document.getElementById("img").value;</script>';   
}

<script src="tiny_mce/tiny_mce.js" type="text/javascript"></script>
<script type="text/javascript">
    // O2k7 skin
    tinyMCE.init({
        // General options
        mode : "exact",
        elements : "content",
        theme : "advanced",
        skin : "o2k7",
        language : "zh",
        relative_urls : false,
//....略过部分...

    });

    function InsertHtml(type,path){

        type=type.toLowerCase()

        switch(type){
            case '.gif':
            thecode = '<img src="'+path+'" alt=""/>';
            break;
            case '.jpg':
            thecode = '<img src="'+path+'" alt=""/>';
            break;
//......略过部分......
            default :
            thecode = '<a href="'+path+'" target="_blank">Download</a>';
            break;
        }
        tinyMCE.execCommand('mceInsertContent',true,thecode);
    }
</script>

            $pasteJS = "<script type=text/javascript>n";
            $pasteJS .= "parent.InsertHtml("" . $file_ext . "","" . $upload_src . "");n";
            $pasteJS .= "</script>n";
            echo $pasteJS;