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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(resource $result, int $row = ?): array

    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。

    注意: 此函数将 NULL 字段设置为 PHP null 值。

    参数

    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.

    返回值

    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。

    更新日志

    版本 说明
    4.1.0 参数 row 成为可选参数。

    范例

    示例 #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";
    }
     
    ?>

    参见

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    User Contributed Notes 7 notes

    up
    3
    pletiplot at seznam dot cz
    17 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
    2
    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
    0
    eddie at eddiemonge dot com
    14 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
    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>";
      }
    up
    -2
    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.
    up
    -5
    maxnamara at yahoo dot com
    19 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
    -6
    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);
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