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    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(PgSql\Result $result, ?int $row = null, int $mode = PGSQL_NUM): array|false

    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. mode is a constant and can take the following values: PGSQL_ASSOC, PGSQL_NUM and PGSQL_BOTH. Using PGSQL_NUM, the function will return an array with numerical indices, using PGSQL_ASSOC it will return only associative indices while PGSQL_BOTH will 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 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

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    User Contributed Notes 7 notes

    up
    4
    post at zeller-johannes dot de
    19 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).
    up
    3
    pletiplot at seznam dot cz
    18 years ago
    Note, that when you retrieve some PG boolean value, you get 't' or 'f' characters which are not compatible with PHP bool.
    up
    0
    eddie at eddiemonge dot com
    15 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.
    up
    0
    darw75 at swbell dot net
    23 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>";
      }
    up
    -1
    Matthew Wheeler
    21 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.
    up
    -6
    maxnamara at yahoo dot com
    20 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;
    }
    up
    -10
    imantr at cbn dot net dot id
    22 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);
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