Note, that when you retrieve some PG boolean value, you get 't' or 'f' characters which are not compatible with PHP bool.
pg_fetch_row
(PHP 4, PHP 5, PHP 7, PHP 8)
pg_fetch_row — 提取一行作为枚举数组
说明
pg_fetch_row() 根据指定 result 实例提取一行数据（记录）作为数组返回。每个得到的列依次存放在数组中，偏移量从 0 开始。
注意: 此函数将 NULL 字段设置为 PHP
null值。
参数
-
result -
PgSql\Result 实例，由 pg_query()、pg_query_params() 或者 pg_execute()（等）返回。
-
row -
要获取的结果中的行号。行从 0 向上编号。如果省略或为
null，则获取下一行。 -
mode -
An optional parameter that controls how the returned array is indexed.
modeis a constant and can take the following values:PGSQL_ASSOC,PGSQL_NUMandPGSQL_BOTH. UsingPGSQL_NUM, the function will return an array with numerical indices, usingPGSQL_ASSOCit will return only associative indices whilePGSQL_BOTHwill return both numerical and associative indices.
返回值
array，从 0 向上索引，每个值表示为一个 string。数据库 NULL 值作为 null 返回。
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。
更新日志
| 版本 | 说明 |
|---|---|
| 8.1.0 |
现在 result 参数接受 PgSql\Result
实例，之前接受 资源(resource)。
|
示例
示例 #1 pg_fetch_row() 示例
<?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occurred.\n";
exit;
}
$result = pg_query($conn, "SELECT author, email FROM authors");
if (!$result) {
echo "An error occurred.\n";
exit;
}
while ($row = pg_fetch_row($result)) {
echo "Author: $row[0] E-mail: $row[1]";
echo "<br />\n";
}
?>参见
- pg_query() - 执行查询
- pg_fetch_array() - 获取一行作为数组
- pg_fetch_object() - 获取一行作为对象
- pg_fetch_result() - 从结果实例返回值
add a note
User Contributed Notes 7 notes
pletiplot at seznam dot cz ¶
17 years ago
post at zeller-johannes dot de ¶
18 years ago
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).
eddie at eddiemonge dot com ¶
13 years ago
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.
darw75 at swbell dot net ¶
22 years ago
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'>$col_value</FONT></TD>\n";
}
echo "<br>";
}
Matthew Wheeler ¶
20 years ago
Note that the internal row counter is incremented BEFORE the row is retrieved. This causes an off by one error if you try to do:
pg_result_seek($resid,0);
pg_fetch_row($resid);
you will get back the SECOND result not the FIRST.
maxnamara at yahoo dot com ¶
18 years ago
Get downlines, put them into arrays.
function get_downlines($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 $info_elements;
}
imantr at cbn dot net dot id ¶
21 years ago
I use the following code to assigning query result to an array.
while ($row = pg_fetch_row($result)) $newArray[] = $row[0];
print_r($newArray);
