Table of Contents
回复讨论(解决方案)
Home Backend Development PHP Tutorial 调试一个ajax要吐血了

调试一个ajax要吐血了

Jun 23, 2016 pm 01:46 PM

写了一个英汉词典,具体流程:
1. 把本地文件按照{English: Chinese}的格式写入memcached服务器
2. 通过ajax提交英语单词,并返回中文释义

遇到的问题: 查询对应的单词,可以通过file_put_contents函数写入本地,证明查询到了相应的单词,在客户端,通过readyState属性可以依次看到返回1,2,3,4,但是在window.alert(type res)时显示未定义。

//这部分代码是OK的,用于读取并解析本地的txt格式词典<?php 	class Word{	private $query_en='#\w+\b#i';	private  $query_ch='#[\x{4e00}-\x{9fa5}][\x{4e00}-\x{9fa5},\)\.\( \w]*#u';	private $arr_word=array();	private  $recycle_num=100;	private  $fp=null;		public function __construct($fileName)	{		$this->fp=fopen($fileName,'r') or die('打开ciba失败');	}			public function readWord()	{			while(!feof($this->fp))			{				$word=fgets($this->fp);				$word=trim($word);				if($word=='') continue;								$en=$this->parseEn($word);				$ch=$this->parseCh($word);				$this->arr_word["$en"]=$ch;								/* $this->recycle_num--;				if($this->recycle_num==0) return; */										}	}	public function parseEn(&$word)	{		if(preg_match($this->query_en, $word, $en))		{			return $en[0];		}		else		{			echo "match english word failed<br />";		}	}	public function parseCh(&$word)	{		if(preg_match($this->query_ch, $word, $ch))		{			return $ch[0];		}		else		{			echo "match chinese failed<br />";		}	}		public  function getWord()	{		return $this->arr_word;	}		public function __destruct()	{		fclose($this->fp);	}}//$word=new Word('ciba.txt');//$word->readWord();//echo "<pre class="brush:php;toolbar:false">";//print_r($word->getWord());//echo "
Copy after login
"; */?>//这部分代码也是OK的,用于将词条写入memcachedmem=new Memcache(); $this->mem->connect("127.0.0.1", 11211) or die("connect memcached failed!!!
"); } public function __destruct() { $this->mem->close(); } public function addWord() { $word=new Word('ciba.txt'); $word->readWord(); $result=$word->getWord(); //echo count($result)."字符
"; //exit(); foreach($result as $en => $ch) { $this->mem->add($en, $ch, MEMCACHE_COMPRESSED, time()+10*24*3600) or die("添加词条失败". __LINE__ ."
"); } } public function setWord($en,$ch) { //控制器判断输入是否合法 $en=$this->filterWord($en); $en=$this->mem->get($en) or die("找不到词条 $en"); $this->mem->set($en, $ch, MEMCACHE_COMPRESSED, time()+31*24*3600) or die("添加词条$en失败"); } public function getWord($en) { //控制器判断输入是否合法 $en=$this->filterWord($en); $ch=$this->mem->get($en) or die("找不到词条 $en"); return $ch; } public function replaceWord($en,$ch) { //控制器判断输入是否合法 $en=$this->filterWord($en); $en=$this->mem->get($en) or die("找不到词条 $en"); $this->mem->replace($en, $ch, MEMCACHE_COMPRESSED, time()+31*24*3600) or die("替换词条$en失败"); } public function deleteWord($en) { //控制器判断输入是否合法 $en=$this->filterWord($en); $this->mem->delete($en,0) or die("删除词条$en失败"); } //过滤掉中文,包括空格的词组,长度大于20的词条 public function filterWord($en){ $en=trim($en); if(preg_match('#[\x{4e00}-\x{9fa5},\)\.\(]+#u', $en)) { //echo '暂时不支持中文查询
'; if(preg_match('#\b[a-z]+\b#i', $en, $res)) { if(strlen($res[0])>20) { //echo "字符过长
"; return strtolower(substr($res[0], 0,20)); } return strtolower($res[0]); } } else if(preg_match('#\s+#', $en)) { //$en=explode(' ', $en); //echo "含有空格
"; $res=null; if(preg_match('#[a-z]+#i', $en, $res)) { if(strlen($res[0])>20) { //echo "字符过长
"; return strtolower(substr($res[0], 0,20)); } return strtolower($res[0]); } } else if(preg_match('#[?_\+\?\*\^\$\#\%\&\/\\,\.!@=\`\'\"\"""]#',$en, $res)) { // //echo '含有非法字符
'; if(preg_match('#[a-z]+#i', $en, $res)) { if(strlen($res[0])>20) { echo "字符过长
"; return strtolower(substr($res[0], 0,20)); } return strtolower($res[0]); } } else if(strlen($en)>20) { //echo "字符过长
"; return strtolower(substr($en, 0,20)); } else { return $en; } } public function flushAll() { $this->mem->flush(); } public function getTime() { if (function_exists("micro_time")) { list($usec, $sec) = explode(" ", microtime()); return ((float)$usec + (float)$sec); } else { return time(); } }}//$mem=new MemStore();//$mem->addWord();//$mem->flushAll();//$mem->replaceWord('abandon', 100000000);//$mem->deleteWord('abandon');//echo $mem->getWord('_*&^%abandon^%$#');//echo "ok"; ?>//下面这段代码也是OK的,根据客户端提交的英语单词,可以成功查询到对应的中文,并写入本地文件成功过getWord($en); $en=$mem->filterWord($en); $res="".$en."".$ch.""; file_put_contents('aword.txt', $res."\r\n",FILE_APPEND);//这里是OK的 echo $res; //echo '{'.$en.':'.$res.'}';}else{ file_put_contents('aword.txt', "receive NON data \r\n",FILE_APPEND);}?>//我估计问题出在下面这段代码,,但是就是找不出问题所在,一直显示undefined



ajax调试要吐血了


回复讨论(解决方案)

var res=xmlhttp.responseXML;
window.alert(typeof $res);

一样吗?不一样当然不行

var res=xmlhttp.responseXML;
window.alert(typeof $res);

一样吗?不一样当然不行




哎。这么明显的错误硬是没照出来。。我用的写字本写的代码。。怎么找都找不到。。。zend studio for eclipse 在我的机器上跑步起来,,有什么轻量级,功能齐全,自动高亮,自动补全的IDE推荐吗?

sublime or notepad++

var res=xmlhttp.responseXML;
window.alert(typeof $res);

一样吗?不一样当然不行



//客户端做出如下修改 xmlhttp.onreadystatechange=function()		{			//window.alert(xmlhttp.readyState);			if (xmlhttp.readyState==4 && xmlhttp.status==200)			{				var res=xmlhttp.responseText;				res=eval("("+res+")");				window.alert(res);				//var en=res.getElementsByTagName("en")[0].childNodes[0].nodeValue;								//var ch=res.getElementsByTagName("ch")[0].childNodes[0].nodeValue;				//var en=$("enWord").value;				/var ch=res.en;				$("chWord").innerText= en+": 的中文意思是: "+ch;   			}		} //服务器这边改成用json传回数据,修改如下<?phpheader("content-type: plain/text; charset=utf-8");require_once "storeWord.php";if(!empty($_GET['enword'])){	$en=$_GET['enword'];			$mem=new MemStore();	$ch=$mem->getWord($en);	$en=$mem->filterWord($en);		$res="<res><en>$en</en><ch>$ch</ch></res>";	file_put_contents('aword.txt', $res."\r\n",FILE_APPEND);	//ob_start();	$res='{"'.$en.'":"'.$ch.'"}';	echo $res;}else{	file_put_contents('aword.txt', "receive NON data \r\n",FILE_APPEND);}
Copy after login

//可以收到数据,不过收到的是一个html网页,试图在ob缓存里把结果过滤出来,但最后还是一个空html+结果

我就不明白了这段HTML是拿来的.* ,而且结果是在

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
WWE 2K25: How To Unlock Everything In MyRise
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Working with Flash Session Data in Laravel Working with Flash Session Data in Laravel Mar 12, 2025 pm 05:08 PM

Laravel simplifies handling temporary session data using its intuitive flash methods. This is perfect for displaying brief messages, alerts, or notifications within your application. Data persists only for the subsequent request by default: $request-

cURL in PHP: How to Use the PHP cURL Extension in REST APIs cURL in PHP: How to Use the PHP cURL Extension in REST APIs Mar 14, 2025 am 11:42 AM

The PHP Client URL (cURL) extension is a powerful tool for developers, enabling seamless interaction with remote servers and REST APIs. By leveraging libcurl, a well-respected multi-protocol file transfer library, PHP cURL facilitates efficient execution of various network protocols, including HTTP, HTTPS, and FTP. This extension offers granular control over HTTP requests, supports multiple concurrent operations, and provides built-in security features.

Simplified HTTP Response Mocking in Laravel Tests Simplified HTTP Response Mocking in Laravel Tests Mar 12, 2025 pm 05:09 PM

Laravel provides concise HTTP response simulation syntax, simplifying HTTP interaction testing. This approach significantly reduces code redundancy while making your test simulation more intuitive. The basic implementation provides a variety of response type shortcuts: use Illuminate\Support\Facades\Http; Http::fake([ 'google.com' => 'Hello World', 'github.com' => ['foo' => 'bar'], 'forge.laravel.com' =>

12 Best PHP Chat Scripts on CodeCanyon 12 Best PHP Chat Scripts on CodeCanyon Mar 13, 2025 pm 12:08 PM

Do you want to provide real-time, instant solutions to your customers' most pressing problems? Live chat lets you have real-time conversations with customers and resolve their problems instantly. It allows you to provide faster service to your custom

Explain the concept of late static binding in PHP. Explain the concept of late static binding in PHP. Mar 21, 2025 pm 01:33 PM

Article discusses late static binding (LSB) in PHP, introduced in PHP 5.3, allowing runtime resolution of static method calls for more flexible inheritance.Main issue: LSB vs. traditional polymorphism; LSB's practical applications and potential perfo

Customizing/Extending Frameworks: How to add custom functionality. Customizing/Extending Frameworks: How to add custom functionality. Mar 28, 2025 pm 05:12 PM

The article discusses adding custom functionality to frameworks, focusing on understanding architecture, identifying extension points, and best practices for integration and debugging.

Framework Security Features: Protecting against vulnerabilities. Framework Security Features: Protecting against vulnerabilities. Mar 28, 2025 pm 05:11 PM

Article discusses essential security features in frameworks to protect against vulnerabilities, including input validation, authentication, and regular updates.

See all articles