探讨PHP获取checkbox值_PHP教程

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发布: 2016-07-15 13:34:51
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如何才能正确的实现php获取checkbox值对于初学者来说还是比较陌生的。在这里我们将为大家详细介绍相关的实现方法,希望对大家有所帮助。

  1.  input type="checkbox" name="weeks[]" 
    id="weeks" value=1>   
  2.  input type="checkbox" name="weeks[]" 
    id="weeks" value=2>   
  3.  input type="checkbox" name="weeks[]" 
    id="weeks" value=3>  


weeks后的中括号不可漏,否则用PHP获取的时候只能取到最后一个值。之后PHP就很好处理了,如下:

PHP获取checkbox值方法一:

<ol class="dp-xml"><li class="alt"><span><span>$</span><span class="attribute">weeks</span><span> = $_POST['weeks'];   </span></span></li><li><span>for($</span><span class="attribute">i</span><span>=</span><span class="attribute-value">0</span><span>;$i</span><span class="tag"><</span><span> </span><span class="tag-name">count<br /></span><span>($weeks);$i++)   </span></li><li class="alt"><span>echo $weeks[1]."</span><span class="tag"><</span><span> </span><span class="tag-name">br</span><span class="tag">></span><span>";  </span></li></ol>
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PHP获取checkbox值方法二:

<ol class="dp-xml"><li class="alt"><span><span>$</span><span class="attribute">array</span><span> = $this-</span><span class="tag">></span><span>request-</span><span class="tag">><br /></span><span>getParameter("weeks[]");   </span></span></li><li><span>$</span><span class="attribute">str</span><span> =</span><span class="attribute-value">implode</span><span>(',',$array);   </span></li><li class="alt"><span>echo $str; </span></li></ol>
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经常用到表单,其中复选框要经常用。但在PHP中与其他的脚本语言不太一样,复选框的名称后面必须加上[],然后用数组循环取得。

<ol class="dp-xml"><li class="alt"><span><span class="tag"><</span><span> ?PHP  </span></span></li><li><span>if(!empty($_POST["t1"])){  </span></li><li class="alt"><span>$</span><span class="attribute">array</span><span> = $_POST["t1"];  </span></li><li><span>$</span><span class="attribute">size</span><span> = </span><span class="attribute-value">count</span><span>($array);  </span></li><li class="alt"><span>for($</span><span class="attribute">i</span><span>=</span><span class="attribute-value">0</span><span>; $i</span><span class="tag"><</span><span> $size; $i++){  </span></li><li><span>echo $array[$i]."</span><span class="tag"><</span><span> </span><span class="tag-name">br</span><span class="tag">></span><span>";  </span></li><li class="alt"><span>}  </span></li><li><span>}  </span></li><li class="alt"><span class="tag">?></span><span> </span></li><li><span class="tag"><</span><span> </span><span class="tag-name">form</span><span> </span><span class="attribute">method</span><span>=</span><span class="attribute-value">post</span><span> </span><span class="attribute">action</span><span>=</span><span class="attribute-value">""</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"form1"</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span> </span><span class="tag-name">input</span><span> </span><span class="attribute">type</span><span>=</span><span class="attribute-value">"checkbox"</span><span> <br /></span><span class="attribute">name</span><span>=</span><span class="attribute-value">"t1[]"</span><span> </span><span class="attribute">value</span><span>=</span><span class="attribute-value">"篮球"</span><span class="tag">></span><span>篮球</span><span class="tag"><</span><span> </span><span class="tag-name">br</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span> </span><span class="tag-name">input</span><span> </span><span class="attribute">type</span><span>=</span><span class="attribute-value">"checkbox"</span><span> <br /></span><span class="attribute">name</span><span>=</span><span class="attribute-value">"t1[]"</span><span> </span><span class="attribute">value</span><span>=</span><span class="attribute-value">"足球"</span><span class="tag">></span><span>足球</span><span class="tag"><</span><span> </span><span class="tag-name">br</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span> </span><span class="tag-name">input</span><span> </span><span class="attribute">type</span><span>=</span><span class="attribute-value">"checkbox"</span><span> <br /></span><span class="attribute">name</span><span>=</span><span class="attribute-value">"t1[]"</span><span> </span><span class="attribute">value</span><span>=</span><span class="attribute-value">"乒乓球"</span><span class="tag">></span><span>乒乓球</span><span class="tag"><</span><span> </span><span class="tag-name">br</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span> </span><span class="tag-name">input</span><span> </span><span class="attribute">type</span><span>=</span><span class="attribute-value">"checkbox"</span><span> <br /></span><span class="attribute">name</span><span>=</span><span class="attribute-value">"t1[]"</span><span> </span><span class="attribute">value</span><span>=</span><span class="attribute-value">"排球"</span><span class="tag">></span><span>排球</span><span class="tag"><</span><span> </span><span class="tag-name">br</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span> </span><span class="tag-name">input</span><span> </span><span class="attribute">type</span><span>=</span><span class="attribute-value">"submit"</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span> /form</span><span class="tag">></span><span> </span></li></ol>
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以上就是PHP获取checkbox值的两种方法介绍。


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