PHP中產生json資訊的方法

最後更新：2016-10-02 來源：互聯網

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 1 <?php 2  3 //php中產生json資訊 4 //json_encode(數組/對象) 5  6 $color = array(‘red‘,‘blue‘,‘green‘); //【索引數組】 7 echo json_encode($color),"<br />"; //["red","blue","green"] 8  9 $animal = array(‘east‘=>‘tiger‘,‘north‘=>‘wolf‘,‘south‘=>‘monkey‘); //【關聯陣列】10 echo json_encode($animal),"<br />";//{"east":"tiger","north":"wolf","south":"monkey"}11 12 //【索引關聯陣列】13 $animal2 = array(‘east‘=>‘tiger‘,‘north‘=>‘wolf‘,‘duck‘,‘south‘=>‘monkey‘);14 echo json_encode($animal2),"<br />";//{"east":"tiger","north":"wolf","0":"duck","south":"monkey"}15 16 //[{},{},{}]17 //{"weatherinfo":{"city":"北京","cityid":"101010100","temp":"9","WD":"南風","WS":"2級","SD":"26%","WSE":"2","time":"10:20","isRadar":"1","Radar":"JC_RADAR_AZ9010_JB","njd":"暫無實況","qy":"1014"}}18 //{名稱:[],名稱:[],名稱:[]}19 20 21 //【對象產生json資訊】22 class Person{23     public $addr = "beijing";24     public $height = 170;25     public function study(){26         echo "study php";27     }28 }29 $tom = new Person();30 //只是對象的屬性給產生json資訊31 echo json_encode($tom);//{"addr":"beijing","height":170}

1.json

json_encode(數組/對象)------------>產生json資訊，

json_decode(json資訊); 反編碼json資訊

對json字串資訊進行反編碼，變為當前語言可以識別的資訊。

2. javascript接收處理json資訊

通過eval()把接收的json字串變成真實的對象資訊

代碼如下：

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 2 <html> 3     <head> 4         <title>建立網頁</title> 5         <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 6         <meta name="description" content="" /> 7         <meta name="keywords" content="" /> 8  9         <script type="text/javascript">10         function showweather(){11             //利用ajax獲得天氣預報資訊12             //利用javascript+dom處理並顯示天氣資訊13             var xhr = new XMLHttpRequest();14             xhr.onreadystatechange = function(){15                 if(xhr.readyState==4){16                     //alert(xhr.responseText);17                     console.log(typeof xhr.responseText);//string18                     //要把接收的“字串”變為“對象”19                     //‘{"addr":"\u5317\u4eac","temp":"9-22","wind":"north4-5"}‘20                     eval("var info="+xhr.responseText);21 22                     var str = "地址："+info.addr+";溫度:"+info.temp+";風向:"+info.wind;23                     document.getElementById(‘result‘).innerHTML = str;24                 }25             }26             xhr.open(‘get‘,‘./03.php‘);27             xhr.send(null);28         }29         window.onload = function(){30             showweather();31         }32         33 //        //s字串變為對象obj34 //         var s = "{name:‘tom‘,height:170}";35 //        //"var obj="+"{name:‘tom‘,height:170}"====>"var obj={name:‘tom‘,height:170}"36 //        //console.log("var obj="+s);  37 //        eval("var obj="+s);38 //        console.log(obj);//Object { name="tom", height=170}39 40         </script>41 42         <style type="text/css">43         </style>44     </head>45     <body>46         <h2>獲得天氣預報介面資訊</h2>47         <div id="result"></div>48     </body>49 </html>

PHP中產生json資訊的方法

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

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PHP中產生json資訊的方法

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