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PHP 매개변수 전달 방법 1--ajax

WBOY
WBOY원래의
2016-07-29 09:15:051016검색

ajax는 "A동기 Javascript 및 XML"(비동기 JavaScript 및 XML)이며 생성을 나타냅니다. 대화형 웹 애플리케이션을 위한 웹 개발 기술입니다.

ajax = 비동기식 JavaScript 및 XML(Standard Universal Markup Language의 하위 집합).

ajax는 빠르고 동적인 웹페이지를 만드는 기술입니다.

ajax는 백그라운드에서 서버와 소량의 데이터를 교환하여 웹페이지를 비동기적으로 업데이트할 수 있습니다. 이는 전체 페이지를 다시 로드하지 않고도 웹페이지의 일부를 업데이트할 수 있음을 의미합니다.

기존 웹페이지(ajax를 사용하지 않음)에서는 콘텐츠를 업데이트해야 하는 경우 전체 웹페이지를 다시 로드해야 합니다. 비동기 요청(XMLHttpRequestObject), 부분 새로 고침(본질적으로 js dom)

ajax도 양식을 작성할 때 사용자 이름이 반복되는지 자동으로 결정하는 데 사용됩니다. , 예를 들어 글을 쓰다블로그글을 쓰다가 갑자기 컴퓨터가 다시 시작되면 쓴 내용의 절반을 복원할 수 있습니다.

Get은 단어 제한이 있습니다. 요청은 URL에 포함되며, 서버의 내용을 수정하는 데 사용됩니다.

get은 안전한 요청이며 정보가 수정되지 않았는지 확인해야 합니다.

1. ajax는 일반적으로 현재 페이지에 사용되며 페이지 점프를 구현하지 않습니다.

2. ajax 방법 비동기식 모니터링 서버 측의 상태는 어떻습니까? onreadystatechange를 통해 Readystate 속성 듣기

request.onreadystatechange = function() {

<span>if (request.readyState===4) {</span>
  • 0: 요청이 초기화되지 않았습니다(open()가 아직 호출되지 않았습니다). .
  • 1: 요청이 설정되었지만 아직 전송되지 않았습니다(send()는 아직 호출되지 않았습니다).
  • 2: 요청이 전송되었으며 처리 중입니다(일반적으로 이제 응답에서 콘텐츠 헤더를 얻을 수 있습니다).
  • 3: 요청이 처리되고 있습니다. 일반적으로 응답에 일부 데이터가 있지만 서버가 아직 응답 생성을 완료하지 않았습니다.
  • 4: 응답이 완료되었습니다. 서버의 응답을 가져와 사용할 수 있습니다.

그래서 일반적으로 4와 같다고 판단하여 해당 연산을 수행하게 됩니다.

그러나 이는 요청 상태와 다르다는 점에 유의하세요.

예를 들어, Readystate=4이지만 status=404는 응답이 완료되었지만 응답 내용은 파일이 찾을 수 없습니다

그래서 일반적으로 ==200일 때 내용을 반환하고 그렇지 않으면 사운드 오류를 표시하는 방법이 있습니다.

포스트 요청에서 URL을 인코딩 및 디코딩하도록 URL을 설정해야 합니다. 그렇지 않으면 결과가 올바르게 제공되지 않습니다.

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

그런데 url 디코딩에 문제가 있습니다. urlencode 시 더하기 기호는 자동으로 공백으로 디코딩되므로 &는 변수 커넥터로 디코딩되므로 이러한 문자를 트랜스코딩해야 한다면

(이미지를 캔버스에 업로드하기 위한 URL을 만들 때 이 문제가 발생했습니다)

Pic = Pic.replace(/ /g, "+");
Pic = Pic.replace(/&/g, "&");

3. 서버는 echo를 통해 ajax를 전달하여 인터페이스를 반환합니다.

(팁: zendstudio의 내장 브라우저는 항상 ajax 페이지의 마지막 페이지를 표시하므로 대신 외부 브라우저에서 실행하세요.

기본 설정 - 일반적인 설정 -웹 브라우저.)

간단한 행만 반환하면 Jason이 필요하지 않으며 다른 키 값으로 데이터를 더 편리하게 반환할 수 있습니다. 

<span> 1</span><span><!</span><span>DOCTYPE HTML</span><span>></span><span> 2</span><span><</span><span>html</span><span>></span><span> 3</span><span><</span><span>head</span><span>></span><span> 4</span><span><</span><span>meta </span><span>http-equiv</span><span>="Content-Type"</span><span> content</span><span>="text/html; charset=utf-8"</span><span>></span><span> 5</span><span><</span><span>title</span><span>></span>Demo<span></</span><span>title</span><span>></span><span> 6</span><span><</span><span>style</span><span>></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>></span><span>12</span><span></</span><span>head</span><span>></span><span>13</span><span>14</span><span><</span><span>body</span><span>></span><span>15</span><span>16</span><span><</span><span>h1</span><span>></span>员工查询<span></</span><span>h1</span><span>></span><span>17</span><span>18</span><span><</span><span>label</span><span>></span>请输入员工编号：<span></</span><span>label</span><span>></span><span>19</span><span><</span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="keyword"</span><span>/></span><span>20</span><span><</span><span>button </span><span>id</span><span>="search"</span><span>></span>查询<span></</span><span>button</span><span>></span><span>21</span><span><</span><span>p </span><span>id</span><span>="searchResult"</span><span>></</span><span>p</span><span>></span><span>22</span><span>23</span><span><</span><span>h1</span><span>></span>员工新建<span></</span><span>h1</span><span>></span><span>24</span><span><</span><span>label</span><span>></span>请输入员工姓名：<span></</span><span>label</span><span>></span><span>25</span><span><</span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffName"</span><span>/><</span><span>br</span><span>></span><span>26</span><span><</span><span>label</span><span>></span>请输入员工编号：<span></</span><span>label</span><span>></span><span>27</span><span><</span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffNumber"</span><span>/><</span><span>br</span><span>></span><span>28</span><span><</span><span>label</span><span>></span>请选择员工性别：<span></</span><span>label</span><span>></span><span>29</span><span><</span><span>select </span><span>id</span><span>="staffSex"</span><span>></span><span>30</span><span><</span><span>option</span><span>></span>女<span></</span><span>option</span><span>></span><span>31</span><span><</span><span>option</span><span>></span>男<span></</span><span>option</span><span>></span><span>32</span><span></</span><span>select</span><span>><</span><span>br</span><span>></span><span>33</span><span><</span><span>label</span><span>></span>请输入员工职位：<span></</span><span>label</span><span>></span><span>34</span><span><</span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffJob"</span><span>/><</span><span>br</span><span>></span><span>35</span><span><</span><span>button </span><span>id</span><span>="save"</span><span>></span>保存<span></</span><span>button</span><span>></span><span>36</span><span><</span><span>p </span><span>id</span><span>="createResult"</span><span>></</span><span>p</span><span>></span><span>37</span><span>38</span><span><</span><span>script</span><span>></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>&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>&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>&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>></span><span>84</span><span></</span><span>body</span><span>></span><span>85</span><span></</span><span>html</span><span>></span>

3. 응답 서버 코드 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" => "洪七", "number" => "101", "sex" => "男", "job" => "总经理"),
        <span>array</span>("name" => "郭靖", "number" => "102", "sex" => "男", "job" => "开发工程师"),
        <span>array</span>("name" => "黄蓉", "number" => "103", "sex" => "女", "job" => "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>?>

4. 다음은 jQuery의 형태이다

<span><!</span><span>DOCTYPE HTML</span><span>></span><span><</span><span>html</span><span>></span><span><</span><span>head</span><span>></span><span><</span><span>meta </span><span>http-equiv</span><span>="Content-Type"</span><span> content</span><span>="text/html; charset=utf-8"</span><span>></span><span><</span><span>title</span><span>></span>Demo<span></</span><span>title</span><span>></span><span><</span><span>style</span><span>></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>></span><span></</span><span>head</span><span>></span><span><</span><span>body</span><span>></span><span><</span><span>h1</span><span>></span>员工查询<span></</span><span>h1</span><span>></span><span><</span><span>label</span><span>></span>请输入员工编号：<span></</span><span>label</span><span>></span><span><</span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="keyword"</span><span>/></span><span><</span><span>button </span><span>id</span><span>="search"</span><span>></span>查询<span></</span><span>button</span><span>></span><span><</span><span>p </span><span>id</span><span>="searchResult"</span><span>></</span><span>p</span><span>></span><span><</span><span>h1</span><span>></span>员工新建<span></</span><span>h1</span><span>></span><span><</span><span>label</span><span>></span>请输入员工姓名：<span></</span><span>label</span><span>></span><span><</span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffName"</span><span>/><</span><span>br</span><span>></span><span><</span><span>label</span><span>></span>请输入员工编号：<span></</span><span>label</span><span>></span><span><</span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffNumber"</span><span>/><</span><span>br</span><span>></span><span><</span><span>label</span><span>></span>请选择员工性别：<span></</span><span>label</span><span>></span><span><</span><span>select </span><span>id</span><span>="staffSex"</span><span>></span><span><</span><span>option</span><span>></span>女<span></</span><span>option</span><span>></span><span><</span><span>option</span><span>></span>男<span></</span><span>option</span><span>></span><span></</span><span>select</span><span>><</span><span>br</span><span>></span><span><</span><span>label</span><span>></span>请输入员工职位：<span></</span><span>label</span><span>></span><span><</span><span>input </span><span>type</span><span>="text"</span><span> id</span><span>="staffJob"</span><span>/><</span><span>br</span><span>></span><span><</span><span>button </span><span>id</span><span>="save"</span><span>></span>保存<span></</span><span>button</span><span>></span><span><</span><span>p </span><span>id</span><span>="createResult"</span><span>></</span><span>p</span><span>></span><span><</span><span>script </span><span>src</span><span>="http://apps.bdimg.com/libs/jquery/1.11.1/jquery.js"</span><span>></</span><span>script</span><span>></span><span><</span><span>script</span><span>></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>></span><span></</span><span>body</span><span>></span><span></</span><span>html</span><span>></span>

<?<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" => "洪七", "number" => "101", "sex" => "男", "job" => "总经理"),
        <span>array</span>("name" => "郭靖", "number" => "102", "sex" => "男", "job" => "开发工程师"),
        <span>array</span>("name" => "黄蓉", "number" => "103", "sex" => "女", "job" => "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>?>

위 내용은 PHP 매개변수 전달 방식 1-ajax를 관련 내용을 포함하여 소개한 내용으로, PHP 튜토리얼에 관심이 있는 친구들에게 도움이 되었으면 좋겠습니다.

성명：
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