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このドキュメントでは、 php中国語ネットマニュアル リリース
(PHP 4, PHP 5)
pg_fetch_row — 提取一行作为枚举数组
$result
[, int $row
] ) pg_fetch_row() 根据指定的 result
资源提取一行数据(记录)作为数组返回。每个得到的列依次存放在数组中,从偏移量 0 开始。
Note: 此函数将 NULL 字段设置为 PHP
NULL
值。
result
PostgreSQL query result resource, returned by pg_query() , pg_query_params() or pg_execute() (among others).
row
Row number in result to fetch. Rows are numbered from 0 upwards. If
omitted or NULL
, the next row is fetched.
An array , indexed from 0 upwards, with each value
represented as a string . Database NULL
values are returned as NULL
.
返回的数组和提取的行相一致。如果没有更多行 row
可提取,则返回 FALSE
。
版本 | 说明 |
---|---|
4.1.0 |
参数 row 成为可选参数。
|
Example #1 pg_fetch_row() 例子
<?php
$conn = pg_pconnect ( "dbname=publisher" );
if (! $conn ) {
echo "An error occured.\n" ;
exit;
}
$result = pg_query ( $conn , "SELECT author, email FROM authors" );
if (! $result ) {
echo "An error occured.\n" ;
exit;
}
while ( $row = pg_fetch_row ( $result )) {
echo "Author: $row [ 0 ] E-mail: $row [ 1 ] " ;
echo "<br />\n" ;
}
?>
[#1] eddie at eddiemonge dot com [2009-10-06 17:09:31]
pg_fetch_row is faster than pg_fetch_assoc when doing a query with * as the select parameter. Otherwise, with declared columns, the two are similar in speed.
[#2] pletiplot at seznam dot cz [2006-06-06 15:18:42]
Note, that when you retrieve some PG boolean value, you get 't' or 'f' characters which are not compatible with PHP bool.
[#3] post at zeller-johannes dot de [2005-04-26 14:51:53]
I wondered whether array values of PostgreSQL are converted to PHP arrays by this functions. This is not the case, they are stored in the returned array as a string in the form "{value1 delimiter value2 delimiter value3}" (See http://www.postgresql.org/docs/8.0/interactive/arrays.html#AEN5389).
[#4] maxnamara at yahoo dot com [2004-10-14 00:03:01]
Get downlines, put them into arrays.
function get_downlines($my_code){
global $link;
$sql = "select user_id, name from tb_user where parentcode = $my_code";
$res = pg_query($link,$sql);
if(!$res){
echo "Error: ".$sql;exit();
}
$num_fields = pg_num_fields($res);
$info_rows = 0;
$num_rows = pg_num_rows($res);
while($arr = pg_fetch_row($res)){
$info_offset = 1;
$info_columns = 0;
while ($info_offset <= $num_fields) {
$info_elements[$info_rows][$info_columns] = $arr[$info_columns];
$info_offset++; $info_columns++;
}
$info_rows++;
}
return $info_elements;
}
[#5] Matthew Wheeler [2003-05-22 21:29:53]
Note that the internal row counter is incremented BEFORE the row is retrieved. This causes an off by one error if you try to do:
pg_result_seek($resid,0);
pg_fetch_row($resid);
you will get back the SECOND result not the FIRST.
[#6] imantr at cbn dot net dot id [2002-07-23 20:38:55]
I use the following code to assigning query result to an array.
while ($row = pg_fetch_row($result)) $newArray[] = $row[0];
print_r($newArray);
[#7] darw75 at swbell dot net [2001-08-22 17:39:23]
a way to do this with 2 loops to insert data into a table...
$num = pg_numrows($result);
$col_num = pg_numfields($result);
for ($i=0; $i<$num; $i++) {
$line = pg_fetch_array($result, $i, PGSQL_ASSOC);
print "\t<tr bgcolor=#dddddd>\n";
for ($j=0; $j<$col_num; $j++){
list($col_name, $col_value) =each($line);
print "\t\t<TD ALIGN=RIGHT><FONT SIZE=1 FACE='Geneva'>$col_value</FONT></TD>\n";
}
echo "<br>";
}