How to get the value of checkbox in php and have the output method of checkbox default value-PHP Tutorial-php.cn

How to get the value of checkbox in php and have the output method of checkbox default value

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Release： 2016-07-25 08:58:12

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This article introduces how to get the value of the checkbox in PHP and how to output the default value of the checkbox. For everyone’s learning reference.

First, let’s look at how to checkbox value. Checkbox uses an array when reading values in PHP.

Example 1,

<html xmlns="http://bbs.it-home.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>php获取 checkbox复选框值的方法_bbs.it-home.org</title> 
</head> 
<body> 
<form name="form1" method="post" action=""> 
<label> 
<input type="checkbox" name="checkbox[]" value="复选一"> 
复选一 
</label> 
<label> 
<input type="checkbox" name="checkbox[]" value="复选二"> 
</label> 
复选二 
<label> 
<input type="checkbox" name="checkbox[]" value="复选三"> 
</label> 
复选三 
<label> 
<input type="checkbox" name="checkbox[]" value="复选四"> 
</label> 
复选四 
<label> 
<input type="submit" name="Submit" value="提交"> 
</label> 
</form> 
</body> 
</html> 
<? 
if( $_POST ) 
{ 
$value = $_POST['checkbox']; 
echo '你选择了:'.implode(',',$value); 
//由于checkbox属性，必须把checkbox复选择框的名字设置为一个如果checkbox[]。
} 
?>

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Example 2,

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>php获取多选框checkbox值_bbs.it-home.org</title> 
</head> 
<body> 
<?php 
$area_arr = array(); 
if($_GET['action']=="submit"){ 
$area_arr = $_POST['area']; 
} 
echo "您选定的地区为: "; 
foreach ($area_arr as $k=>$v){ 
echo $v." "; 
} 
?> 
<form id="form1" name="form1" method="post" action="?action=submit"> 
<p>河北 
<label> 
<input type="checkbox" id="area" name="area[]" value="河北"> 
</label> 
</p> 
<p>河南 
<label> 
<input type="checkbox" id="area[]" name="area[]" value="河南"> 
</label> 
</p> 
<p>山西 
<label> 
<input type="checkbox" id="area[]" name="area[]" value="山西"> 
</label> 
</p> 
<p>山东 
<label> 
<input type="checkbox" id="area[]" name="area[]" value="山东"> 
</label> 
</p> 
<p>江苏 
<label> 
<input type="checkbox" id="area[]" name="area[]" value="江苏"> 
</label> 
</p> 
<p>浙江 
<label> 
<input type="checkbox" id="area[]" name="area[]" value="浙江"> 
</label> 
</p> 
<p> 
<label> 
<input type="submit" name="Submit" value="提交"> 
</label> 
</p> 
</form> 
</body> 
</html>

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Example 3, The php checkbox selects questions by default, and you can use if to judge, as follows:

<input name="jbxue" type="checkbox" value="jiaju" <?php if($myrow[fujia_jiaju]) echo("checked");?>>

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This is about how to get the checkbox value in php. I hope to be helpful.