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    pg_fetch_row

    (PHP 4, PHP 5, PHP 7, PHP 8)

    pg_fetch_row — Get a row as an enumerated array

    Descrição

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

    pg_fetch_row() fetches one row of data from the result associated with the specified result instance.

    Nota: Esta função define campos NULL como o valor null do PHP.

    Parâmetros

    result

    Uma instância de PgSql\Result, retornada por pg_query(), pg_query_params() ou pg_execute() (entre outras).

    row

    Row number in result to fetch. Rows are numbered from 0 upwards. If omitted or null, the next row is fetched.

    mode

    Um parâmetro opcional que controla como o array retornado será indexado. mode é uma constante e pode assumir os seguintes valores: PGSQL_ASSOC, PGSQL_NUM e PGSQL_BOTH. Usando PGSQL_NUM, a função retornará um array com índices numéricos, usando PGSQL_ASSOC ela retornará apenas índices associativos enquanto PGSQL_BOTH retornará índices numéricos e associativos.

    Valor Retornado

    An array, indexed from 0 upwards, with each value represented as a string. Database NULL values are returned as null.

    false is returned if row exceeds the number of rows in the set, there are no more rows, or on any other error.

    Registro de Alterações

    Versão Descrição
    8.1.0 O parâmetro result agora espera uma instância de PgSql\Result; anteriormente, um resource era esperado.

    Exemplos

    Exemplo #1 pg_fetch_row() example

    <?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";
    }

    ?>

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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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