Get the field length in php mysql_field_len_PHP tutorial

php gets the field length mysql_field_len is used to get the length of the value returned by mysql_query,

Syntax:

mysql_field_len(data,field_offset)

data: required. The specified data pointer is used. The data pointer is due from the mysql_query() function

field_offset:required. Specify where to start and return. 0 means the first field

$sql = "SELECT * from Person";
$result = mysql_query($sql,$con);

$length = mysql_field_len($result, 0);

echo $length;

结果为

20

http://www.bkjia.com/PHPjc/630894.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/630894.htmlTechArticlephp gets the field length mysql_field_len to get the length of the value returned by mysql_query, syntax: mysql_field_len(data,field_offset) data: required. The specified data pointer is used. Data...