Backend DevelopmentPHP TutorialSharing of specific improvement techniques for PHP function parameter passing methods_PHP TutorialSharing of specific improvement techniques for PHP function parameter passing methods_PHP Tutorial
When we were writing After many repeated operations, I decided to improve the traditional PHP function parameter passing method and use arrays as parameters. Please see the example below.
Let’s first look at a traditional custom function
<ol class="dp-xml">
<li class="alt"><span><span>/** </span></span></li>
<li class=""><span>* @Purpose: 插入文本域 </span></li>
<li class="alt"><span>* @Method Name: addInput() </span></li>
<li class=""><span>* @Parameter: str $title 表单项标题 </span></li>
<li class="alt"><span>* @Parameter: str $name 元素名称 </span></li>
<li class=""><span>* @Parameter: str $value 默认值 </span></li>
<li class="alt"><span>* @Parameter: str $type 类型,默认为text,可选password </span></li>
<li class=""><span>* @Parameter: str $maxlength 最长输入 </span></li>
<li class="alt"><span>* @Parameter: str $readonly 只读 </span></li>
<li class=""><span>* @Parameter: str $required 是否必填,默认为false,true为必填 </span></li>
<li class="alt"><span>* @Parameter: str $check 表单验证function(js)名称 </span></li>
<li class=""><span>* @Parameter: str $id 元素id,无特殊需要时省略 </span></li>
<li class="alt"><span>* @Parameter: int $width 元素宽度,单位:象素 </span></li>
<li class=""><span>* @Parameter: str $tip 元素提示信息 </span></li>
<li class="alt"><span>* @Return: </span></li>
<li class=""><span>*/ </span></li>
<li class="alt">
<span>function addInput($title,$name,$</span><span class="attribute"><font color="#ff0000">value</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">""</font></span><span>,$</span><span class="attribute"><font color="#ff0000">type</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"text"</font></span><span>,$</span><span class="attribute"><font color="#ff0000">maxlength</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"255"</font></span><span>,<br>$readonly,$</span><span class="attribute"><font color="#ff0000">required</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"false"</font></span><span>,$check,$id,$width,$tip) </span>
</li>
<li class=""><span>{ </span></li>
<li class="alt">
<span> $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>form </span><span class="attribute"><font color="#ff0000">.</font></span><span>= </span><span class="attribute-value"><font color="#0000ff">"<li>n"</li></font></span><span>; </span>
</li>
<li class="">
<span> $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>form </span><span class="attribute"><font color="#ff0000">.</font></span><span>= </span><span class="attribute-value"><font color="#0000ff">"<label>"</label></font></span><span>.$title.":</span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">label</span><span class="tag">></span></font></strong><span>n"; </span>
</li>
<li class="alt">
<span> $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>form </span><span class="attribute"><font color="#ff0000">.</font></span><span>= "</span><strong><font color="#006699"><span class="tag"><span class="tag-name">input</span></span></font></strong><span> name="</span><span class="attribute-value"><font color="#0000ff">".$name."</font></span><span>" </span><span class="attribute"><font color="#ff0000">value</font></span><span>="".$value."" </span><span class="attribute"><font color="#ff0000">type</font></span><span>=""<br>.$type."" </span><span class="attribute"><font color="#ff0000">maxlength</font></span><span>="".$maxlength."" </span><span class="attribute"><font color="#ff0000">required</font></span><span>="".$required."" </span><span class="attribute"><font color="#ff0000">check</font></span><span>=""<br>.$check."" </span><span class="attribute"><font color="#ff0000">id</font></span><span>="".$id."" </span><span class="attribute"><font color="#ff0000">class</font></span><span>="input" ".$readonly." </span><span class="attribute"><font color="#ff0000">style</font></span><span>="width:".$width.<br>"px;" </span><span class="attribute"><font color="#ff0000">showName</font></span><span>="".$title."" </span><span class="tag"><strong><font color="#006699">/></font></strong></span><span> "; </span>
</li>
<li class="">
<span> $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>form </span><span class="attribute"><font color="#ff0000">.</font></span><span>= "</span><strong><font color="#006699"><span class="tag"><span class="tag-name">span</span></span></font></strong><span> class="</span><span class="attribute-value"><font color="#0000ff">tip</font></span><span>"</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>".$tip."</span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">span</span><span class="tag">></span></font></strong><span>n"; </span>
</li>
<li class="alt">
<span> $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>form </span><span class="attribute"><font color="#ff0000">.</font></span><span>= </span><span class="attribute-value"><font color="#0000ff">"</font></span>
</li>n"<span>; </span><li class=""><span>} </span></li>
</ol>
This is the form class I wrote A function that inserts a text box.
The calling method of the PHP function parameter passing method is
<ol class="dp-xml"><li class="alt"><span><span>$form-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>addInput("编码","field0","","text",3,""); </span></span></li></ol>
At the beginning, only $title, $name, $value, $type, $maxlength, $readonly and other parameters were reserved. After a period of use, it was found that these basic parameters could not meet the needs. Text box JS verification is required, CSS styles need to be defined, prompt information needs to be added, etc...
After adding $required, $check, $id, $width, $tip and other parameters, I found that all previous calls to this function were found Everything needs to be modified, which adds a lot of workload.
The calling method of the PHP function parameter passing method becomes
<ol class="dp-xml"><li class="alt"><span><span>$form-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>addInput("编码","field0","","text",3,"","true",""<br>,"",100,"提示:编号为必填项,只能填写3位"); </span></span></li></ol>
If there are many places where this function is used, it will really take a long time to change each one.
The following is my improved function
<ol class="dp-xml">
<li class="alt"><span><span>function addInput($a) </span></span></li>
<li class=""><span>{ </span></li>
<li class="alt"><span> if(is_array($a)) </span></li>
<li class=""><span> { </span></li>
<li class="alt">
<span> $</span><span class="attribute"><font color="#ff0000">title</font></span><span> = $a['title']; </span>
</li>
<li class="">
<span> $</span><span class="attribute"><font color="#ff0000">name</font></span><span> = $a['name']; </span>
</li>
<li class="alt">
<span> $</span><span class="attribute"><font color="#ff0000">value</font></span><span> = $a['value'] ? $a['value'] : ""; </span>
</li>
<li class="">
<span> $</span><span class="attribute"><font color="#ff0000">type</font></span><span> = $a['type'] ? $a['type'] : "text"; </span>
</li>
<li class="alt">
<span> $</span><span class="attribute"><font color="#ff0000">maxlength</font></span><span> = $a['maxlength'] ? $a['maxlength'] : "255"; </span>
</li>
<li class="">
<span> $</span><span class="attribute"><font color="#ff0000">readonly</font></span><span> = $a['readonly'] ? $a['readonly'] : ""; </span>
</li>
<li class="alt">
<span> $</span><span class="attribute"><font color="#ff0000">required</font></span><span> = $a['required'] ? $a['required'] : "false"; </span>
</li>
<li class="">
<span> $</span><span class="attribute"><font color="#ff0000">check</font></span><span> = $a['check']; </span>
</li>
<li class="alt">
<span> $</span><span class="attribute"><font color="#ff0000">id</font></span><span> = $a['id']; </span>
</li>
<li class="">
<span> $</span><span class="attribute"><font color="#ff0000">width</font></span><span> = $a['width']; </span>
</li>
<li class="alt">
<span> $</span><span class="attribute"><font color="#ff0000">tip</font></span><span> = $a['tip']; </span>
</li>
<li class=""><span> } </span></li>
<li class="alt">
<span> $title,$name,$</span><span class="attribute"><font color="#ff0000">value</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">""</font></span><span>,$</span><span class="attribute"><font color="#ff0000">type</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"text"</font></span><span>,$</span><span class="attribute"><font color="#ff0000">maxlength</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"255"</font></span><span>,$readonly,$</span><span class="attribute"><font color="#ff0000">required</font></span><span>=</span><span class="attribute-value"><font color="#0000ff">"false"</font></span><span>,$check,$id,$width,$tip </span>
</li>
<li class="">
<span> $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>form </span><span class="attribute"><font color="#ff0000">.</font></span><span>= </span><span class="attribute-value"><font color="#0000ff">"<li>n"</li></font></span><span>; </span>
</li>
<li class="alt">
<span> $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>form </span><span class="attribute"><font color="#ff0000">.</font></span><span>= </span><span class="attribute-value"><font color="#0000ff">"<label>"</label></font></span><span>.$title.":</span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">label</span><span class="tag">></span></font></strong><span>n"; </span>
</li>
<li class="">
<span> $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>form </span><span class="attribute"><font color="#ff0000">.</font></span><span>= "</span><strong><font color="#006699"><span class="tag"><span class="tag-name">input</span></span></font></strong><span> name="</span><span class="attribute-value"><font color="#0000ff">".$name."</font></span><span>" </span><span class="attribute"><font color="#ff0000">value</font></span><span>="".$value."" </span><span class="attribute"><font color="#ff0000">type</font></span><span>="".$type."" </span><span class="attribute"><font color="#ff0000">maxlength</font></span><span>="".$maxlength."" </span><span class="attribute"><font color="#ff0000">required</font></span><span>="".$required."" </span><span class="attribute"><font color="#ff0000">check</font></span><span>="".$check."" </span><span class="attribute"><font color="#ff0000">id</font></span><span>="".$id."" </span><span class="attribute"><font color="#ff0000">class</font></span><span>="input" ".$readonly." </span><span class="attribute"><font color="#ff0000">style</font></span><span>="width:".$width."px;" </span><span class="attribute"><font color="#ff0000">showName</font></span><span>="".$title."" </span><span class="tag"><strong><font color="#006699">/></font></strong></span><span> "; </span>
</li>
<li class="alt">
<span> $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>form </span><span class="attribute"><font color="#ff0000">.</font></span><span>= "</span><strong><font color="#006699"><span class="tag"><span class="tag-name">span</span></span></font></strong><span> class="</span><span class="attribute-value"><font color="#0000ff">tip</font></span><span>"</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>".$tip."</span><strong><font color="#006699"><span class="tag"></span><span class="tag-name">span</span><span class="tag">></span></font></strong><span>n"; </span>
</li>
<li class="">
<span> $this-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>form </span><span class="attribute"><font color="#ff0000">.</font></span><span>= </span><span class="attribute-value"><font color="#0000ff">"</font></span>
</li>n"<span>; </span><li class="alt"><span>} </span></li>
</ol>
The calling method becomes >
<ol class="dp-xml"> <li class="alt"><span><span>$form-</span><span class="tag"><strong><font color="#006699">></font></strong></span><span>addInput( </span></span></li> <li class=""><span> array( </span></li> <li class="alt"><span> 'title' = "编码", </span></li> <li class=""><span> 'name' = "field0", </span></li> <li class="alt"><span> 'maxlength' = 3, </span></li> <li class=""><span> 'required' = "true", </span></li> <li class="alt"><span> 'width' = 100, </span></li> <li class=""><span> 'tip' = "提示:编号为必填项,只能填写3位", </span></li> <li class="alt"><span> ) </span></li> <li class=""><span>); </span></li> </ol>Passed by A comparison of the PHP function parameter passing methods before and after can be found:
Traditional functions change a lot when they need to be expanded. When used, they must be written in the order of parameters, which is easy to make mistakes.
When the improved function is expanded You can add new parameters at any time. You only need to add the corresponding array key value when calling. Each parameter is clear at a glance without considering the order. The readability of the code is enhanced.
However, there are still improvements in the PHP function parameter passing method. The disadvantage is that the amount of code increases, requiring programmers to write a lot more key values, and the judgment statements and ternary operation statements in the function may affect efficiency.
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