Posting lots of checkboxes
UPDATE 2:
The following gives me UDPATE table SET db_field1=0, dbfield2=0, dbfield3=0, dbfield4=0 WHERE 1=1 no matter which options are checked:
<?php
if( $_SERVER['REQUEST_METHOD'] == 'POST' ) {
$fields = array('db_field1'=>'cb1', 'dbfield2'=>'cb2', 'dbfield3'=>'cb3', 'dbfield4'=>'cb4');
$update = '';
foreach($fields as $dbfield => $field) {
if ($update) $update.= ',';
$update.= ' '.$dbfield.'=';
if (isset($_POST[field])) {
$update.= 1;
} else {
$update.= 0;
}
}
echo 'UDPATE table SET'.$update.' WHERE 1=1';
}
?>
<html>
<head>
<title></title>
</head>
<body>
<form method="post">
<input type="checkbox" name="cb1" />
<input type="checkbox" name="cb2" />
<!-- all the way to 50 -->
<input type="checkbox" name="cb3" />
<input type="checkbox" name="cb4" />
<input type="submit" value="submit" />
</form>
</body>
</html>
UPDATE 1:
<?php
if( $_SERVER['REQUEST_METHOD'] == 'POST' ) {
if( isset( $_POST["cb"] ) ) {
$update = "";
foreach ($_POST['cb'] as $key => $value) {
if ( $update ) $update.= ', ';
$update .= $key . " = 1";
}
echo "update table1 set " . $update . " where uid = 10";
}
}
?>
<html>
<head>
<title></title>
</head>
<body>
<form method="post">
<input type="checkbox" name="cb[col1]" />
<input type="checkbox" name="cb[col2]" />
<!-- all the way to 50 -->
<input type="checkbox" name="cb[col3]" />
<input type="checkbox" name="cb[col4]" />
<input type="submit" value="submit" />
</form>
</body>
</html>
ORIGINAL QUESTION:
I have a PHP form with lots of checkboxes to allow users to select which options to turn on or off.
What is the best way to return which checkboxes are checked so I can insert the data into the database as either 0's or 1's?
I have the following code, but this seems a bit excessive if I used this method for all 50 checkboxes:
<?php
if( $_SERVER['REQUEST_METHOD'] == 'POST' 开发者_如何转开发) {
if( isset( $_POST["cb1"] ) ) {
// insert 1 in relevant database table cell
echo 1;
} else {
// insert 0 in relevant database table cell
echo 0;
}
if( isset( $_POST["cb2"] ) ) {
// insert 1 in relevant database table cell
echo 1;
} else {
// insert 0 in relevant database table cell
echo 0;
}
// all the way to 50
if( isset( $_POST["cb49"] ) ) {
// insert 1 in relevant database table cell
echo 1;
} else {
// insert 0 in relevant database table cell
echo 0;
}
if( isset( $_POST["cb50"] ) ) {
// insert 1 in relevant database table cell
echo 1;
} else {
// insert 0 in relevant database table cell
echo 0;
}
}
?>
<html>
<head>
<title></title>
</head>
<body>
<form method="post">
<input type="checkbox" name="cb1" />
<input type="checkbox" name="cb2" />
<!-- all the way to 50 -->
<input type="checkbox" name="cb49" />
<input type="checkbox" name="cb50" />
<input type="submit" value="submit" />
</form>
</body>
</html>
Define a map between the checkbox name (POST array entry name) and the mysql table name; use that to construct your SQL to do the value insertion.
Create an array with all the different fields:
$fields = array('db_field1'=>'cb1', 'dbfield2'=>'cb2', 'dbfield3'=>'etc', );
$update = '';
foreach($fields as $dbfield => $field) {
if ($update) $update.= ',';
$update.= ' '.$dbfield.'=';
if (isset($_POST[$field])) {
$update.= 1;
} else {
$update.= 0;
}
}
$query = 'UDPATE table SET'.$update.' WHERE 1=1';
Where db_field is the name of the column in the table and cd are the html field names
EDIT
Added better sample code
EDIT 2
Fixed post variable
in HTML do the following:
<input type="checkbox" name="checkboxeslist[1]" />
<input type="checkbox" name="checkboxeslist[2]" />
<input type="checkbox" name="checkboxeslist[49]" />
<input type="checkbox" name="checkboxeslist[50]" />
in PHP do the following:
<?php
if (isset($_POST['checkboxeslist'])) {
//one is at least selected; hence start looping
foreach ($_POST['checkboxeslist'] as $key => $value) {
echo $key; //this will print 1,2,49,50 etc... ONLY IF they have been selected
//do the DB call here
}
}
?>
In order to also get the non selected checkboxes do the following (only if you want all the numbers between 1 & 50:
<?php
if (isset($_POST['checkboxeslist'])) {
//one is at least selected; hence start looping
for ($i = 1; $i <= 50; $i++) {
if (isset($_POST['checkboxeslist'][$i])) {
echo "1";
} else {
echo "0";
}
}
}
?>
For HTML, you can just loop through those fields too. Have a list of the columns somewhere; with MVC model you could take them from model. Otherwise an array would suffice, or querying database about contents of the table.
For taking column names from database:
SELECT name FROM syscolumns
WHERE id = (SELECT id FROM sysobjects
WHERE name= 'MyTableName')
ORDER by colorder
Then,
foreach($columns as $column) {
echo '<input type="text" name="cb['. $column .']" />' . "\n";
}
to print the columns.
加载中,请稍侯......
精彩评论