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pg_fetch_array

pg_fetch_array

(PHP 4, PHP 5)

pg_fetch_array提取一行作为数组

说明

array pg_fetch_array ( resource $result [, int $row [, int $result_type ]] )

pg_fetch_array() 返回一个与所提取的行(元组/记录)相一致的数组。如果没有更多行可供提取,则返回 FALSE

pg_fetch_array()pg_fetch_row() 的扩展版本。在返回的数组中不仅以数字索引方式存放数据(字段编号),默认情况下还用字段名做索引存放数据(字段名)。

row 是想要取得的行(记录)的编号。第一行为 0。

result_type 是可选参数,控制着怎样初始化返回值。result_type 是一个常量,可以有以下取值:PGSQL_ASSOCPGSQL_NUMPGSQL_BOTH。取值为 PGSQL_ASSOCpg_fetch_array() 返回用字段名作为键值索引的关联数组,取值为 PGSQL_NUM 时用字段编号作为键值,取值为 PGSQL_BOTH 时则同时用两者作为键值。默认值是 PGSQL_BOTH

Note:

result_type 是在 PHP 4.0 中才加入的参数。

pg_fetch_array() 并不明显比使用 pg_fetch_row() 慢,而且在使用中提供了更大的方便。

Example #1 pg_fetch_array()

<?php 

$conn 
pg_pconnect("dbname=publisher");
if (!
$conn) {
    echo 
"An error occured. ";
    exit;
}

$result pg_query($conn"SELECT * FROM authors");
if (!
$result) {
    echo 
"An error occured. ";
    exit;
}

$arr pg_fetch_array($result0PGSQL_NUM);
echo 
$arr[0] . " <- array ";

$arr pg_fetch_array($result1PGSQL_ASSOC);
echo 
$arr["author"] . " <- array ";

?>

Note:

从 4.1.0 开始,row 成为可选参数。每次调用 pg_fetch_array(),内部的行计数器都会加一。

参见 pg_fetch_row()pg_fetch_object() 以及 pg_fetch_result()


  • pg_affected_rows
  • pg_cancel_query
  • pg_client_encoding
  • pg_close
  • pg_connect
  • pg_connection_busy
  • pg_connection_reset
  • pg_connection_status
  • pg_convert
  • pg_copy_from
  • pg_copy_to
  • pg_dbname
  • pg_delete
  • pg_end_copy
  • pg_escape_bytea
  • pg_escape_identifier
  • pg_escape_literal
  • pg_escape_string
  • pg_execute
  • pg_fetch_all
  • pg_fetch_all_columns
  • pg_fetch_array
  • pg_fetch_assoc
  • pg_fetch_object
  • pg_fetch_result
  • pg_fetch_row
  • pg_field_is_null
  • pg_field_name
  • pg_field_num
  • pg_field_prtlen
  • pg_field_size
  • pg_field_table
  • pg_field_type
  • pg_field_type_oid
  • pg_free_result
  • pg_get_notify
  • pg_get_pid
  • pg_get_result
  • pg_host
  • pg_insert
  • pg_last_error
  • pg_last_notice
  • pg_last_oid
  • pg_lo_close
  • pg_lo_create
  • pg_lo_export
  • pg_lo_import
  • pg_lo_open
  • pg_lo_read
  • pg_lo_read_all
  • pg_lo_seek
  • pg_lo_tell
  • pg_lo_unlink
  • pg_lo_write
  • pg_meta_data
  • pg_num_fields
  • pg_num_rows
  • pg_options
  • pg_parameter_status
  • pg_pconnect
  • pg_ping
  • pg_port
  • pg_prepare
  • pg_put_line
  • pg_query
  • pg_query_params
  • pg_result_error
  • pg_result_error_field
  • pg_result_seek
  • pg_result_status
  • pg_select
  • pg_send_execute
  • pg_send_prepare
  • pg_send_query
  • pg_send_query_params
  • pg_set_client_encoding
  • pg_set_error_verbosity
  • pg_trace
  • pg_transaction_status
  • pg_tty
  • pg_unescape_bytea
  • pg_untrace
  • pg_update
  • pg_version
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