这是我的班级代码:
class DAL
{
public function paramtypez($val)
{
$types = ''; //initial sting with types
foreach($val as $para)
{
if(is_int($para)) {
$types .= 'i'; //integer
} elseif (is_float($para)) {
$types .= 'd'; //double
} elseif (is_string($para)) {
$types .= 's'; //string
} else {
$types .= 'b'; //blob and unknown
}
}
return $types;
}
public function execsql($query,$param)
{
$conn=new mysqli("127.0.0.1","root","","sample");
if($row=$conn->prepare($query))
{
array_unshift($param,array(DAL::paramtypez($param)));
call_user_func_array(array($row, 'bind_param'), $param);
$row->execute();
return true;
}
else
return false;
}
}
并使用此类:
$vars = new DAL();
$vars->execsql('insert into tesst (name,family,age) values(?,?,?)',array('mori','gre','25'));
但是这回复了我这个错误:
Warning: Parameter 2 to mysqli_stmt::bind_param() expected to be a reference, value given in ..\htdocs\inc.php on line 30
如何修复此错误? 谢谢你的帮助
答案 0 :(得分:2)
这种情况正在发生,因为当bind_param期望实际引用时,您正在给出一个数组:
试试看是否有效:
class DAL
{
public function paramtypez($val)
{
$types = ''; //initial sting with types
foreach($val as $para)
{
if(is_int($para)) {
$types .= 'i'; //integer
} elseif (is_float($para)) {
$types .= 'd'; //double
} elseif (is_string($para)) {
$types .= 's'; //string
} else {
$types .= 'b'; //blob and unknown
}
}
return $types;
}
public function execsql($query,$param)
{
$conn=new mysqli("127.0.0.1","root","","sample");
if($row=$conn->prepare($query))
{
array_unshift($param,array(DAL::paramtypez($param)));
call_user_func_array(array($row, 'bind_param'), $this->makeValuesReferenced($param));
$row->execute();
return true;
}
else
return false;
}
protected function makeValuesReferenced(&$arr)
{
$refs = array();
foreach($arr as $key => $value)
$refs[$key] = &$arr[$key];
return $refs;
}
}
答案 1 :(得分:2)
$param
看起来就像这样:
[['ssi'],'mori','gre','25']
这是不正确的。你应该改变这个:
array_unshift($param,array(DAL::paramtypez($param)));
对此:
array_unshift($param,DAL::paramtypez($param));