php - mysql where field in 使用变量填充部分

Question

我将如何做到（这只是示例）不返回错误？

$field_in = this, that

$result = mysql_query("SHOW COLUMNS FROM " . $table. " WHERE Field IN ( ".$field_in." )")

Answer 1

$result = mysql_query( 
   "select *
    from INFORMATION_SCHEMA.COLUMNS c
    where c.TABLE_SCHEMA = '" . $table. "' 
    and c.COLUMN_NAME IN ( ".$field_in." )")