我有一个字段数组,在使用implode
函数并将它们转换为字符串之后,我试图将此字符串用作mysql_query()
函数中的列名,如下所示:
$field_array = array('course','batch','branch');
$fields = implode(", ",$field_array);
$resource = mysql_query("SELECT $fields FROM some_table") or die(mysql_error());
但我收到以下错误。我在这里做错了什么?
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM fix_data' at line 1
下面是我正在使用的确切代码
function fetch_resource_db_nowhere($table_name,$field_array,$return_type,$return_type_name) {
if($field_array[0]=='ALL') {
//echo "asda";
$resource = mysql_query("SELECT * FROM ".$table_name."") or die(mysql_error());
}
else {
$fields = implode(",",$field_array);
$sql = "SELECT ".$fields." FROM ".$table_name."";
echo $sql;
$resource = mysql_query($sql) or die(mysql_error());
}
if($return_type == 'resource') {
return $resource;
}
if($return_type == 'resource_array') {
return mysql_fetch_assoc($resource);
}
if($return_type == 'resource_array_value') {
$resource_array = mysql_fetch_assoc($resource);
return $resource_array[$return_type_name];
}
}
$data = fetch_resource_db_nowhere('fix_data',array('course','branch','name'),'resource','');