Tips for PHP dynamic website development_PHP tutorial

Many programmers are using 1. Naming

1. input
2. type ='checkbox'
3. name ='checkbox[]'
4. value=$dwmyrow[banzhu]
5. />

2. Use

when the plan is used as part of the sql command: if If the fields participating in the control are numerical, then

<ol class="dp-xml">
<li class="alt"><span><span>if(! empty($_POST['checkbox'])) </span></span></li>
<li class="alt"><span><span>{  </span></span></li>
<li>
<span>$</span><span class="attribute">expr</span><span> = </span><span class="attribute-value">join</span><span>(",", $_POST['checkbox']);  </span>
</li>
<li class="alt">
<span>$</span><span class="attribute">sql</span><span> = </span><span class="attribute-value">"select * from tbl_name where <br>field in ($expr)"</span><span>;  </span>
</li>
<li><span>}  </span></li>
</ol>

If PHP dynamic website development says that the fields participating in the control are numerical, then

<ol class="dp-xml">
<li class="alt"><span><span>if(! empty($_POST['checkbox'])) </span></span></li>
<li class="alt"><span><span>{  </span></span></li>
<li>
<span>$</span><span class="attribute">expr</span><span> = </span><span class="attribute-value">"'"</span><span>.join("','", $_POST<br>['checkbox']).".";  </span>
</li>
<li class="alt">
<span>$</span><span class="attribute">sql</span><span> = </span><span class="attribute-value">"select * from tbl_name <br>where field in ($expr)"</span><span>;  </span>
</li>
<li><span>}  </span></li>
</ol>

PHP determines whether the Form form is submitted

<ol class="dp-xml">
<li class="alt"><span><span>$</span><span class="attribute">action</span><span>=$HTTP_POST_VARS["Button1"];  </span></span></li>
<li>
<span>if($</span><span class="attribute">action</span><span>=="提交")  </span>
</li>
<li class="alt"><span>{  </span></li>
<li><span>//执行表单操作  </span></li>
<li class="alt"><span>}  </span></li>
<li><span>else  </span></li>
<li class="alt"><span> {  </span></li>
<li><span>//读取默认值  </span></li>
<li class="alt"><span>}  </span></li>
</ol>

PHP gets the string length in dynamic website development

<ol class="dp-xml"><li class="alt"><span><span>strlen($myrow[1])  </span></span></li></ol>

PHP Url redirection

<ol class="dp-xml"><li class="alt"><span><span>Header("Location: ".<br>$_SERVER["HTTP_REFERER"]);  </span></span></li></ol>

Super global object in PHP dynamic website development

<ol class="dp-xml">
<li class="alt"><span><span class="tag"><span class="tag-name">php</span><span> </span></span></span></li>
<li>
<span>$</span><span class="attribute">a</span><span> = </span><span class="attribute-value">1</span><span>;  </span>
</li>
<li class="alt">
<span>$</span><span class="attribute">b</span><span> = </span><span class="attribute-value">2</span><span>;  </span>
</li>
<li><span>function Sum()  </span></li>
<li class="alt"><span>{  </span></li>
<li><span>　$GLOBALS["b"] = <br>$GLOBALS["a"] + $GLOBALS["b"];  </span></li>
<li class="alt"><span>}  </span></li>
<li><span>Sum();  </span></li>
<li class="alt"><span>echo $b;  </span></li>
<li>
<span></span><span class="tag">?></span><span> </span>
</li>
</ol>

PHP form value

If method="get", use $_GET["test"] instead of $test
If method="post", use $_POST["test"] instead of $test

PHP Get the current IP during dynamic website development

<ol class="dp-xml">
<li class="alt"><span><span class="tag"></span></span></li>
<li class="alt"><span><span>=$HTTP_SERVER_VARS["REMOTE_ADDR"]</span></span></li>
<li class="alt"><span><span class="tag">?></span><span> </span></span></li>
</ol>

PHP Get the current time

<ol class="dp-xml">
<li class="alt"><span><span class="tag"></span><span class="tag-name">php</span><span> </span></span></li>
<li><span>　echo date("Y-m-d G:i:s");  </span></li>
<li class="alt">
<span></span><span class="tag">?></span><span> </span>
</li>
<li><span>　date("Y年m月d日")  </span></li>
<li class="alt"><span>　Date ("Y-n-j")  </span></li>
</ol>

The above are the specific techniques for PHP dynamic website development explain.

http://www.bkjia.com/PHPjc/446290.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/446290.htmlTechArticleMany programmers are using 1. Naming input type = 'checkbox' name = 'checkbox[]' value = $dwmyrow[banzhu] / 2. Use when the plan is used as part of the sql command: If participating in the control...