PHP get field length mysql_field_len_php tutorial

Source: Internet
Author: User
PHP Gets the field length Mysql_field_len is the length of the value returned by getting mysql_query,

Grammar:

Mysql_field_len (Data,field_offset)

Data: Required option. Specifies the data pointer to use. The data pointer is due to the mysql_query () function


Field_offset: Requirements. Specify where to start and return. 0 indicates the first field

$sql = "SELECT * from person"; $result = mysql_query ($sql, $con);
$length = Mysql_field_len ($result, 0);
Echo $length;
Result is
20

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