php + mysql问题（字段名“ group”）

Question

public function insert($table, $data = array()) {
    $fieldnames = array_keys ( $data );
    var_dump(implode ( ' ,', $fieldnames ));
    $name = '( ' . implode ( ' ,', $fieldnames ) . ' )';
    $value = '(:' . implode ( ', :', $fieldnames ) . ' )';
    $query = "INSERT INTO $table";
    $query .= $name . ' VALUES ' . $value;
    var_dump($query);
    $insert = $this->start->prepare ( $query );
    return $insert->execute ( $data );
}

Question: ok i have a function that helps me simplify the insert statement (pdo) the problem is is when i insert a field if "group" name on it

$a['group'] = $_POST['group'];
$a['tag'] = $_POST['tag'];
$a['information'] = $_POST['information'];
$status= $this->insert ( 'groups', $a);

it will generate a mysql error like

PDOStatement::execute() [pdostatement.execute]: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'group ,tag ,information ) VALUES ('agroup', 'atag', 'ainformation' )'

this is the query

INSERT INTO groups( group ,tag ,information ) VALUES (:group, :tag, :information )

im guessing that it should be

INSERT INTO groups( "group" ,"tag" ,"information" ) VALUES (:group, :tag, :information )

im not sure where should we start from.

Thanks for looking in

Adam Ramadhan

Answer 1

Quote group with backticks.

Example

`group`

group is a reserved word in SQL. You may have used...

GROUP BY `id` DESC

...or similar before.

If using >= PHP 5.3...

$fieldnames = array_map(function($field) {
    return "`$field`";
}, $fieldnames);

Answer 2

Where you have:

  INSERT INTO groups( "group" ,"tag" ,"information" ) ...

You need to have:

  INSERT INTO `groups` ( `group` ,`tag` ,`information` ) ...

Do this with the following:

  $groups = array('group','tag','information');
  $mysql_groups = '`' . implode('`,`', $groups) . '`';
  $sql = 'INSERT INTO `groups` (' . $mysql_groups . ') ...';