maxdb_fetch_fields

maxdb_result::fetch_fields

(PECL maxdb >= 1.0)

maxdb_fetch_fields -- maxdb_result::fetch_fields — Returns an array of resources representing the fields in a result set

说明

过程化风格

maxdb_fetch_fields ( resource $result ) : mixed

面向对象风格

maxdb_result::fetch_fields ( void ) : mixed

This function serves an identical purpose to the maxdb_fetch_field() function with the single difference that, instead of returning one resource at a time for each field, the columns are returned as an array of resources.

返回值

Returns an array of resources which contains field definition information or FALSE if no field information is available.

Object properties
Property Description
name The name of the column
max_length The maximum width of the field for the result set.
type The data type used for this field
decimals The number of decimals used (for integer fields)

范例

Example #1 面向对象风格

<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");

/* check connection */
if (maxdb_connect_errno()) {
   printf("Connect failed: %s\n", maxdb_connect_error());
   exit();
}

$query = "SELECT name, cno from hotel.customer ORDER BY cno";

if ($result = $maxdb->query($query)) {

   /* Get field information for all columns */
   $finfo = $result->fetch_fields();

   foreach ($finfo as $val) {
       printf("Name:     %s\n", $val->name);
       printf("Table:    %s\n", $val->table);
       printf("max. Len: %d\n", $val->max_length);
       printf("Flags:    %d\n", $val->flags);
       printf("Type:     %d\n\n", $val->type);
   }
   $result->close();
}

/* close connection */
$maxdb->close();
?>

Example #2 过程化风格

<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");

/* check connection */
if (maxdb_connect_errno()) {
   printf("Connect failed: %s\n", maxdb_connect_error());
   exit();
}

$query = "SELECT name, cno from hotel.customer ORDER BY cno";

if ($result = maxdb_query($link, $query)) {

   /* Get field information for all columns */
   $finfo = maxdb_fetch_fields($result);

   foreach ($finfo as $val) {
       printf("Name:     %s\n", $val->name);
       printf("Table:    %s\n", $val->table);
       printf("max. Len: %d\n", $val->max_length);
       printf("Flags:    %d\n", $val->flags);
       printf("Type:     %d\n\n", $val->type);
   }
   maxdb_free_result($result);
}

/* close connection */
maxdb_close($link);
?>

以上例程的输出类似于：

Name:     NAME
Table:
max. Len: 10
Flags:    -1
Type:     2

Name:     CNO
Table:
max. Len: 4
Flags:    -1
Type:     0

参见

相关文章
php ibm db2 函数 returns a result set listing the columns and associated privileges for a tablephp ibm db2 函数 returns an array indexed by column position representing a row in a result setphp ibm db2 函数 returns an array indexed by column name representing a row in a result setphp ibm db2 函数 returns an array indexed by both column name and position representing a row in a result setphp ibm db2 函数 returns the name of the column in the result setphp ibm db2 函数 returns the number of fields contained in a result setphp ibm db2 函数 returns a result set listing the tables and associated privileges in a databasephp ibm db2 函数 returns a result set listing the tables and associated metadata in a databasephp maxdb 函数 returns the default character set for the database connectionphp maxdb 函数 returns the next field in the result setphp maxdb 函数 returns an array of resources representing the fields in a result setphp maxdb 函数 returns the lengths of the columns of the current row in the result setphp maxdb 函数 returns the current row of a result set as an objectphp maxdb 函数 set result pointer to a specified field offsetphp maxdb 函数 get the number of fields in a resultphp maxdb 函数 returns result set metadata from a prepared statementphp maxdb 函数 initiate a result set retrievalphp sqlite 函数 returns the number of fields in a result setphp sybase 函数 gets the number of fields in a result setphp mysqli result returns an array of objects representing the fields in a result set
关注编程学问公众号