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首页 后端开发 php教程 php传参方式1--ajax

php传参方式1--ajax

Jul 29, 2016 am 09:15 AM
gt lt post request

ajax即“Asynchronous Javascript And XML”（异步JavaScript和XML），是指一种创建交互式网页应用的网页开发技术。

ajax = 异步 JavaScript和XML（标准通用标记语言的子集）。

ajax 是一种用于创建快速动态网页的技术。

通过在后台与服务器进行少量数据交换，ajax 可以使网页实现异步更新。这意味着可以在不重新加载整个网页的情况下，对网页的某部分进行更新。

传统的网页（不使用 ajax）如果需要更新内容，必须重载整个网页页面。异步请求（XMLHttpRequest对象），局部刷新（本质是js dom）

ajax的用途还有填写表单时候自动判断用户名是否重复，比如你写博客写到一半突然电脑重启了，可以恢复你写了一半的内容。

get用于获取数据，有字数限制，请求提包括在url中，post无限制，用于修改服务器的内容。

get是安全的请求，需要保证不修改信息。

1、ajax一般用于当前页面，不实现页面跳转 

2、ajax端：怎样异步得监听服务器端的状态呢？通过onreadystatechange监听readystate属性

request.onreadystatechange = function() {

<span>if (request.readyState===4) {</span>
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  • 0：请求未初始化（还没有调用 open()）。
  • 1：请求已经建立，但是还没有发送（还没有调用 send()）。
  • 2：请求已发送，正在处理中（通常现在可以从响应中获取内容头）。
  • 3：请求在处理中；通常响应中已有部分数据可用了，但是服务器还没有完成响应的生成。
  • 4：响应已完成；您可以获取并使用服务器的响应了。

所以一般都是判断等于4之后进行相应的操作。

但注意这个和request的status是不一样的

比如readystate=4但是status=404表示响应完成但是响应的内容是没有找到文件

所以一般做法是==200的时候返回内容，其他就显示发声错误即可。

注意在post请求中要设置url 成encode，及url解码，否则不能正确给出结果

request.setRequestHeader("Content-type","application/x-www-form-urlencoded");

但是url解码会有一个问题，由于进行urlencoded的时候加号会自动解码成空格，&会被解码成变量连接符，所以如果出现这些字符必须要进行转码

（在做canvas上传图片的url的时候遇到了这个问题）

Pic = Pic.replace(/\+/g, "%2B");
Pic = Pic.replace(/\&/g, "%26");

3、服务器通过echo来返回给传递ajax的界面。

（提示：zendstudio内置的浏览器对于ajax的页面总是会显示上一次的页面，所以改成在外置浏览器里运行

　　preference-general-web browser里面设置。）

如果只返回一行简单的，可以不用jason，jason可以更方便返回不同键值的数据。

<span> 1</span><span><span>DOCTYPE HTML</span><span>&gt;</span><span> 2</span><span><span>html</span><span>&gt;</span><span> 3</span><span><span>head</span><span>&gt;</span><span> 4</span><span><span>meta </span><span>http-equiv</span><span>="Content-Type"</span><span> content</span><span>="text/html; charset=utf-8"</span><span>&gt;</span><span> 5</span><span><span>title</span><span>&gt;</span>Demo<span></span><span>title</span><span>&gt;</span><span> 6</span><span><span>style</span><span>&gt;</span><span> 7</span><span>body, input, select, button, h1 </span><span>{</span><span> 8</span><span>    font-size</span><span>:</span><span> 28px</span><span>;</span><span> 9</span><span>    line-height</span><span>:</span><span>1.7</span><span>;</span><span>10</span><span>}</span><span>11</span><span></span><span>style</span><span>&gt;</span><span>12</span><span></span><span>head</span><span>&gt;</span><span>13</span><span>14</span><span><span>body</span><span>&gt;</span><span>15</span><span>16</span><span><span>h1</span><span>&gt;</span>员工查询<span></span><span>h1</span><span>&gt;</span><span>17</span><span>18</span><span><span>label</span><span>&gt;</span>请输入员工编号：<span></span><span>label</span><span>&gt;</span><span>19</span><span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="keyword"</span><span>/&gt;</span><span>20</span><span><span>button </span><span>id</span><span>="search"</span><span>&gt;</span>查询<span></span><span>button</span><span>&gt;</span><span>21</span><span><span>p </span><span>id</span><span>="searchResult"</span><span>&gt;</span><span>p</span><span>&gt;</span><span>22</span><span>23</span><span><span>h1</span><span>&gt;</span>员工新建<span></span><span>h1</span><span>&gt;</span><span>24</span><span><span>label</span><span>&gt;</span>请输入员工姓名：<span></span><span>label</span><span>&gt;</span><span>25</span><span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffName"</span><span>/&gt;<span>br</span><span>&gt;</span><span>26</span><span><span>label</span><span>&gt;</span>请输入员工编号：<span></span><span>label</span><span>&gt;</span><span>27</span><span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffNumber"</span><span>/&gt;<span>br</span><span>&gt;</span><span>28</span><span><span>label</span><span>&gt;</span>请选择员工性别：<span></span><span>label</span><span>&gt;</span><span>29</span><span><span>select </span><span>id</span><span>="staffSex"</span><span>&gt;</span><span>30</span><span><span>option</span><span>&gt;</span>女<span></span><span>option</span><span>&gt;</span><span>31</span><span><span>option</span><span>&gt;</span>男<span></span><span>option</span><span>&gt;</span><span>32</span><span></span><span>select</span><span>&gt;<span>br</span><span>&gt;</span><span>33</span><span><span>label</span><span>&gt;</span>请输入员工职位：<span></span><span>label</span><span>&gt;</span><span>34</span><span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffJob"</span><span>/&gt;<span>br</span><span>&gt;</span><span>35</span><span><span>button </span><span>id</span><span>="save"</span><span>&gt;</span>保存<span></span><span>button</span><span>&gt;</span><span>36</span><span><span>p </span><span>id</span><span>="createResult"</span><span>&gt;</span><span>p</span><span>&gt;</span><span>37</span><span>38</span><span><span>script</span><span>&gt;</span><span>39</span><span>document.getElementById(</span><span>"</span><span>search</span><span>"</span><span>).onclick </span><span>=</span><span>function</span><span>() { 
</span><span>40</span><span>var</span><span> request </span><span>=</span><span>new</span><span> XMLHttpRequest();
</span><span>41</span><span>    request.open(</span><span>"</span><span>GET</span><span>"</span><span>, </span><span>"</span><span>serverjson.php?number=</span><span>"</span><span>+</span><span> document.getElementById(</span><span>"</span><span>keyword</span><span>"</span><span>).value);
</span><span>42</span><span>    request.send();
</span><span>43</span><span>    request.onreadystatechange </span><span>=</span><span>function</span><span>() {
</span><span>44</span><span>if</span><span> (request.readyState</span><span>===</span><span>4</span><span>) {
</span><span>45</span><span>if</span><span> (request.status</span><span>===</span><span>200</span><span>) { </span><span>//</span><span>不同的status在<strong>百度</strong>可以找到</span><span>46</span><span>var</span><span> data </span><span>=</span><span> JSON.parse(request.responseText);</span><span>//</span><span>json.parse!</span><span>47</span><span>if</span><span> (data.success) { </span><span>//</span><span>注意seccess也返回jason的一个键值</span><span>48</span><span>                    document.getElementById(</span><span>"</span><span>searchResult</span><span>"</span><span>).innerHTML </span><span>=</span><span> data.msg;</span><span>//</span><span>json中的msg键值</span><span>49</span><span>                } </span><span>else</span><span> {
</span><span>50</span><span>                    document.getElementById(</span><span>"</span><span>searchResult</span><span>"</span><span>).innerHTML </span><span>=</span><span>"</span><span>出现错误：</span><span>"</span><span>+</span><span> data.msg;
</span><span>51</span><span>                }
</span><span>52</span><span>            } </span><span>else</span><span> {<br></span><span>53</span><span>                alert(</span><span>"</span><span>发生错误：</span><span>"</span><span>+</span><span> request.status);
</span><span>54</span><span>            }
</span><span>55</span><span>        } 
</span><span>56</span><span>    }
</span><span>57</span><span>}
</span><span>58</span><span>59</span><span>document.getElementById(</span><span>"</span><span>save</span><span>"</span><span>).onclick </span><span>=</span><span>function</span><span>() { 
</span><span>60</span><span>var</span><span> request </span><span>=</span><span>new</span><span> XMLHttpRequest();
</span><span>61</span><span>    request.open(</span><span>"</span><span>POST</span><span>"</span><span>, </span><span>"</span><span>serverjson.php</span><span>"</span><span>);
</span><span>62</span><span>var</span><span> data </span><span>=</span><span>"</span><span>name=</span><span>"</span><span>+</span><span> document.getElementById(</span><span>"</span><span>staffName</span><span>"</span><span>).value 
</span><span>63</span><span>+</span><span>"</span><span>&amp;number=</span><span>"</span><span>+</span><span> document.getElementById(</span><span>"</span><span>staffNumber</span><span>"</span><span>).value 
</span><span>64</span><span>+</span><span>"</span><span>&amp;sex=</span><span>"</span><span>+</span><span> document.getElementById(</span><span>"</span><span>staffSex</span><span>"</span><span>).value 
</span><span>65</span><span>+</span><span>"</span><span>&amp;job=</span><span>"</span><span>+</span><span> document.getElementById(</span><span>"</span><span>staffJob</span><span>"</span><span>).value;
</span><span>66</span><span>    request.setRequestHeader(</span><span>"</span><span>Content-type</span><span>"</span><span>,</span><span>"</span><span>application/x-www-form-urlencoded</span><span>"</span><span>);
</span><span>67</span><span>    request.send(data);
</span><span>68</span><span>    request.onreadystatechange </span><span>=</span><span>function</span><span>() {
</span><span>69</span><span>if</span><span> (request.readyState</span><span>===</span><span>4</span><span>) {
</span><span>70</span><span>if</span><span> (request.status</span><span>===</span><span>200</span><span>) { 
</span><span>71</span><span>var</span><span> data </span><span>=</span><span> JSON.parse(request.responseText);
</span><span>72</span><span>if</span><span> (data.success) { 
</span><span>73</span><span>                    document.getElementById(</span><span>"</span><span>createResult</span><span>"</span><span>).innerHTML </span><span>=</span><span> data.msg;
</span><span>74</span><span>                } </span><span>else</span><span> {
</span><span>75</span><span>                    document.getElementById(</span><span>"</span><span>createResult</span><span>"</span><span>).innerHTML </span><span>=</span><span>"</span><span>出现错误：</span><span>"</span><span>+</span><span> data.msg;
</span><span>76</span><span>                }
</span><span>77</span><span>            } </span><span>else</span><span> {
</span><span>78</span><span>                alert(</span><span>"</span><span>发生错误：</span><span>"</span><span>+</span><span> request.status);
</span><span>79</span><span>            }
</span><span>80</span><span>        } 
</span><span>81</span><span>    }
</span><span>82</span><span>}
</span><span>83</span><span></span><span>script</span><span>&gt;</span><span>84</span><span></span><span>body</span><span>&gt;</span><span>85</span><span></span><span>html</span><span>&gt;</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
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 3、响应server代码serverjason.php

<span>php
</span><span>//</span><span>设置页面内容是html编码格式是utf-8</span><span>header</span>("Content-Type: text/plain;charset=utf-8"<span>); 
</span><span>//</span><span>header("Content-Type: application/json;charset=utf-8"); 
//header("Content-Type: text/xml;charset=utf-8"); 
//header("Content-Type: text/html;charset=utf-8"); 
//header("Content-Type: application/javascript;charset=utf-8"); 

//定义一个多维数组，包含员工的信息，每条员工信息为一个数组</span><span>$staff</span> = <span>array</span><span>    (
        </span><span>array</span>("name" =&gt; "洪七", "number" =&gt; "101", "sex" =&gt; "男", "job" =&gt; "总经理"),
        <span>array</span>("name" =&gt; "郭靖", "number" =&gt; "102", "sex" =&gt; "男", "job" =&gt; "开发工程师"),
        <span>array</span>("name" =&gt; "黄蓉", "number" =&gt; "103", "sex" =&gt; "女", "job" =&gt; "产品经理"<span>)
    );

</span><span>//</span><span>判断如果是get请求，则进行搜索；如果是POST请求，则进行新建
//$_SERVER是一个超<strong>全局变量</strong>，在一个脚本的全部作用域中都可用，不用使用global关键字
//$_SERVER["REQUEST_METHOD"]返回访问页面使用的请求方法</span><span>if</span> (<span>$_SERVER</span>["REQUEST_METHOD"] == "GET"<span>) {
    search();
} </span><span>elseif</span> (<span>$_SERVER</span>["REQUEST_METHOD"] == "POST"<span>){
    create();
}

</span><span>//</span><span>通过员工编号搜索员工</span><span>function</span><span> search(){
    </span><span>//</span><span>检查是否有员工编号的参数
    //isset检测变量是否设置；empty判断值为否为空
    //超<strong>全局变量</strong> $_GET 和 $_POST 用于收集表单数据</span><span>if</span> (!<span>isset</span>(<span>$_GET</span>["number"]) || <span>empty</span>(<span>$_GET</span>["number"<span>])) {
        </span><span>echo</span> '{"success":false,"msg":"参数错误"}';<span>//</span><span>jason格式</span><span>return</span><span>;
    }
    </span><span>//</span><span>函数之外声明的变量拥有 Global 作用域，只能在函数以外进行访问。
    //global 关键词用于访问函数内的<strong>全局变量</strong></span><span>global</span><span>$staff</span><span>;
    </span><span>//</span><span>获取number参数</span><span>$number</span> = <span>$_GET</span>["number"<span>];
    </span><span>$result</span> = '{"success":false,"msg":"没有找到员工。"}'<span>;
    
    </span><span>//</span><span>遍历$staff多维数组，查找key值为number的员工是否存在，如果存在，则修改返回结果</span><span>foreach</span> (<span>$staff</span><span>as</span><span>$value</span><span>) {
        </span><span>if</span> (<span>$value</span>["number"] == <span>$number</span><span>) {
            </span><span>$result</span> = '{"success":true,"msg":"找到员工：员工编号：' . <span>$value</span>["number"] . 
                            '，员工姓名：' . <span>$value</span>["name"] . 
                            '，员工性别：' . <span>$value</span>["sex"] . 
                            '，员工职位：' . <span>$value</span>["job"] . '"}';<span>//</span><span>jason格式</span><span>break</span><span>;
        }
    }
    </span><span>echo</span><span>$result</span><span>;
}

</span><span>//</span><span>创建员工</span><span>function</span><span> create(){
    </span><span>//</span><span>判断信息是否填写完全</span><span>if</span> (!<span>isset</span>(<span>$_POST</span>["name"]) || <span>empty</span>(<span>$_POST</span>["name"<span>])
        </span>|| !<span>isset</span>(<span>$_POST</span>["number"]) || <span>empty</span>(<span>$_POST</span>["number"<span>])
        </span>|| !<span>isset</span>(<span>$_POST</span>["sex"]) || <span>empty</span>(<span>$_POST</span>["sex"<span>])
        </span>|| !<span>isset</span>(<span>$_POST</span>["job"]) || <span>empty</span>(<span>$_POST</span>["job"<span>])) {
        </span><span>echo</span> '{"success":false,"msg":"参数错误，员工信息填写不全"}'<span>;
        </span><span>return</span><span>;
    }
    </span><span>//</span><span>TODO: 获取POST表单数据并保存到数据库
    
    //提示保存成功</span><span>echo</span> '{"success":true,"msg":"员工：' . <span>$_POST</span>["name"] . ' 信息保存成功！"}'<span>;
}

</span>?&gt;
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4、下面是jQuery的形式

<span><span>DOCTYPE HTML</span><span>&gt;</span><span><span>html</span><span>&gt;</span><span><span>head</span><span>&gt;</span><span><span>meta </span><span>http-equiv</span><span>="Content-Type"</span><span> content</span><span>="text/html; charset=utf-8"</span><span>&gt;</span><span><span>title</span><span>&gt;</span>Demo<span></span><span>title</span><span>&gt;</span><span><span>style</span><span>&gt;</span><span>body, input, select, button, h1 </span><span>{</span><span>    font-size</span><span>:</span><span> 28px</span><span>;</span><span>    line-height</span><span>:</span><span>1.7</span><span>;</span><span>}</span><span></span><span>style</span><span>&gt;</span><span></span><span>head</span><span>&gt;</span><span><span>body</span><span>&gt;</span><span><span>h1</span><span>&gt;</span>员工查询<span></span><span>h1</span><span>&gt;</span><span><span>label</span><span>&gt;</span>请输入员工编号：<span></span><span>label</span><span>&gt;</span><span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="keyword"</span><span>/&gt;</span><span><span>button </span><span>id</span><span>="search"</span><span>&gt;</span>查询<span></span><span>button</span><span>&gt;</span><span><span>p </span><span>id</span><span>="searchResult"</span><span>&gt;</span><span>p</span><span>&gt;</span><span><span>h1</span><span>&gt;</span>员工新建<span></span><span>h1</span><span>&gt;</span><span><span>label</span><span>&gt;</span>请输入员工姓名：<span></span><span>label</span><span>&gt;</span><span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffName"</span><span>/&gt;<span>br</span><span>&gt;</span><span><span>label</span><span>&gt;</span>请输入员工编号：<span></span><span>label</span><span>&gt;</span><span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffNumber"</span><span>/&gt;<span>br</span><span>&gt;</span><span><span>label</span><span>&gt;</span>请选择员工性别：<span></span><span>label</span><span>&gt;</span><span><span>select </span><span>id</span><span>="staffSex"</span><span>&gt;</span><span><span>option</span><span>&gt;</span>女<span></span><span>option</span><span>&gt;</span><span><span>option</span><span>&gt;</span>男<span></span><span>option</span><span>&gt;</span><span></span><span>select</span><span>&gt;<span>br</span><span>&gt;</span><span><span>label</span><span>&gt;</span>请输入员工职位：<span></span><span>label</span><span>&gt;</span><span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffJob"</span><span>/&gt;<span>br</span><span>&gt;</span><span><span>button </span><span>id</span><span>="save"</span><span>&gt;</span>保存<span></span><span>button</span><span>&gt;</span><span><span>p </span><span>id</span><span>="createResult"</span><span>&gt;</span><span>p</span><span>&gt;</span><span><span>script </span><span>src</span><span>="http://apps.bdimg.com/libs/jquery/1.11.1/jquery.js"</span><span>&gt;</span><span>script</span><span>&gt;</span><span><span>script</span><span>&gt;</span><span>$(document).ready(</span><span>function</span><span>(){ 
    $(</span><span>"</span><span>#search</span><span>"</span><span>).click(</span><span>function</span><span>(){ 
        $.<strong>ajax</strong>({ 
            type: </span><span>"</span><span>GET</span><span>"</span><span>,     
            url: </span><span>"</span><span>serverjson2.php?number=</span><span>"</span><span>+</span><span> $(</span><span>"</span><span>#keyword</span><span>"</span><span>).val(),
            dataType: </span><span>"</span><span>json</span><span>"</span><span>,
            success: </span><span>function</span><span>(data) {
                </span><span>if</span><span> (data.success) { 
                    $(</span><span>"</span><span>#searchResult</span><span>"</span><span>).html(data.msg);
                } </span><span>else</span><span> {
                    $(</span><span>"</span><span>#searchResult</span><span>"</span><span>).html(</span><span>"</span><span>出现错误：</span><span>"</span><span>+</span><span> data.msg);
                }  
            },
            error: </span><span>function</span><span>(jqXHR){     
               alert(</span><span>"</span><span>发生错误：</span><span>"</span><span>+</span><span> jqXHR.status);  
            },     
        });
    });
    
    $(</span><span>"</span><span>#save</span><span>"</span><span>).click(</span><span>function</span><span>(){ 
        $.<strong>ajax</strong>({ 
            type: </span><span>"</span><span>POST</span><span>"</span><span>,     
            url: </span><span>"</span><span>serverjson.php</span><span>"</span><span>,
            data: {
                name: $(</span><span>"</span><span>#staffName</span><span>"</span><span>).val(), 
                number: $(</span><span>"</span><span>#staffNumber</span><span>"</span><span>).val(), 
                sex: $(</span><span>"</span><span>#staffSex</span><span>"</span><span>).val(), 
                job: $(</span><span>"</span><span>#staffJob</span><span>"</span><span>).val()
            },
            dataType: </span><span>"</span><span>json</span><span>"</span><span>,
            success: </span><span>function</span><span>(data){
                </span><span>if</span><span> (data.success) { 
                    $(</span><span>"</span><span>#createResult</span><span>"</span><span>).html(data.msg);
                } </span><span>else</span><span> {
                    $(</span><span>"</span><span>#createResult</span><span>"</span><span>).html(</span><span>"</span><span>出现错误：</span><span>"</span><span>+</span><span> data.msg);
                }  
            },
            error: </span><span>function</span><span>(jqXHR){     
               alert(</span><span>"</span><span>发生错误：</span><span>"</span><span>+</span><span> jqXHR.status);  
            },     
        });
    });
});
</span><span></span><span>script</span><span>&gt;</span><span></span><span>body</span><span>&gt;</span><span></span><span>html</span><span>&gt;</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
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<span>php
</span><span>//</span><span>设置页面内容是html编码格式是utf-8
//header("Content-Type: text/plain;charset=utf-8"); </span><span>header</span>('Access-Control-Allow-Origin:*'<span>);
</span><span>header</span>('Access-Control-Allow-Methods:POST,GET'<span>);
</span><span>header</span>('Access-Control-Allow-Credentials:true'<span>); 
</span><span>header</span>("Content-Type: application/json;charset=utf-8"<span>); 
</span><span>//</span><span>header("Content-Type: text/xml;charset=utf-8"); 
//header("Content-Type: text/html;charset=utf-8"); 
//header("Content-Type: application/javascript;charset=utf-8"); 

//定义一个多维数组，包含员工的信息，每条员工信息为一个数组</span><span>$staff</span> = <span>array</span><span>    (
        </span><span>array</span>("name" =&gt; "洪七", "number" =&gt; "101", "sex" =&gt; "男", "job" =&gt; "总经理"),
        <span>array</span>("name" =&gt; "郭靖", "number" =&gt; "102", "sex" =&gt; "男", "job" =&gt; "开发工程师"),
        <span>array</span>("name" =&gt; "黄蓉", "number" =&gt; "103", "sex" =&gt; "女", "job" =&gt; "产品经理"<span>)
    );

</span><span>//</span><span>判断如果是get请求，则进行搜索；如果是POST请求，则进行新建
//$_SERVER是一个超<strong>全局变量</strong>，在一个脚本的全部作用域中都可用，不用使用global关键字
//$_SERVER["REQUEST_METHOD"]返回访问页面使用的请求方法</span><span>if</span> (<span>$_SERVER</span>["REQUEST_METHOD"] == "GET"<span>) {
    search();
} </span><span>elseif</span> (<span>$_SERVER</span>["REQUEST_METHOD"] == "POST"<span>){
    create();
}

</span><span>//</span><span>通过员工编号搜索员工</span><span>function</span><span> search(){
    </span><span>//</span><span>检查是否有员工编号的参数
    //isset检测变量是否设置；empty判断值为否为空
    //超<strong>全局变量</strong> $_GET 和 $_POST 用于收集表单数据</span><span>if</span> (!<span>isset</span>(<span>$_GET</span>["number"]) || <span>empty</span>(<span>$_GET</span>["number"<span>])) {
        </span><span>echo</span> '{"success":false,"msg":"参数错误"}'<span>;
        </span><span>return</span><span>;
    }
    </span><span>//</span><span>函数之外声明的变量拥有 Global 作用域，只能在函数以外进行访问。
    //global 关键词用于访问函数内的<strong>全局变量</strong></span><span>global</span><span>$staff</span><span>;
    </span><span>//</span><span>获取number参数</span><span>$number</span> = <span>$_GET</span>["number"<span>];
    </span><span>$result</span> = '{"success":false,"msg":"没有找到员工。"}'<span>;
    
    </span><span>//</span><span>遍历$staff多维数组，查找key值为number的员工是否存在，如果存在，则修改返回结果</span><span>foreach</span> (<span>$staff</span><span>as</span><span>$value</span><span>) {
        </span><span>if</span> (<span>$value</span>["number"] == <span>$number</span><span>) {
            </span><span>$result</span> = '{"success":true,"msg":"找到员工：员工编号：' . <span>$value</span>["number"] . 
                            '，员工姓名：' . <span>$value</span>["name"] . 
                            '，员工性别：' . <span>$value</span>["sex"] . 
                            '，员工职位：' . <span>$value</span>["job"] . '"}'<span>;
            </span><span>break</span><span>;
        }
    }
    </span><span>echo</span><span>$result</span><span>;
}

</span><span>//</span><span>创建员工</span><span>function</span><span> create(){
    </span><span>//</span><span>判断信息是否填写完全</span><span>if</span> (!<span>isset</span>(<span>$_POST</span>["name"]) || <span>empty</span>(<span>$_POST</span>["name"<span>])
        </span>|| !<span>isset</span>(<span>$_POST</span>["number"]) || <span>empty</span>(<span>$_POST</span>["number"<span>])
        </span>|| !<span>isset</span>(<span>$_POST</span>["sex"]) || <span>empty</span>(<span>$_POST</span>["sex"<span>])
        </span>|| !<span>isset</span>(<span>$_POST</span>["job"]) || <span>empty</span>(<span>$_POST</span>["job"<span>])) {
        </span><span>echo</span> '{"success":false,"msg":"参数错误，员工信息填写不全"}'<span>;
        </span><span>return</span><span>;
    }
    </span><span>//</span><span>TODO: 获取POST表单数据并保存到数据库
    
    //提示保存成功</span><span>echo</span> '{"success":true,"msg":"员工：' . <span>$_POST</span>["name"] . ' 信息保存成功！"}'<span>;
}

</span>?&gt;
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以上就介绍了php传参方式1--ajax，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。

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