How to get related functions of field length in PHP? Summary of php information functions

When using PHP language to perform database operations, you will usually encounter functions related to database tables that need to be implemented. So how does PHP operate the database table? Next, let's take a look at the specific PHP information functions.

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PHP obtains table field names through the mysql_field_name() function. The syntax format of this function is as follows:

string mysql_field_name (resource $result, int $field_offset)

mysql_field_name() function will return the name of the field of the specified index. Its parameters are described as follows.

l result: The result set returned after the mysql_query() function is executed.

l field_offset: The offset of the field, the starting value is zero.

The sample code for PHP to get the table field name using the mysql_field_name() function is as follows:

< ?php  
$connection=mysql_connect("localhost",
    "root","root") or die("连接服务器失败");  
mysql_select_db("sunyang",$connection)
     or die("选择数据库失败");  
$query="select * from employee";  
$result=mysql_query($query) or 
    die("查询用户失败");  
echo mysql_field_name($result,0);
     //输出第一个字段名  
echo "<br>";  
echo mysql_field_name($result,1); 
    //输出第二个字段名  
mysql_close($connection);   
?>

In the above PHP code to get the table field name, the first field name and the second field name can be output.

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