pg_fetch

说明

array pg_fetch_row ( resource 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。

返回的数组和提取的行相一致。如果没有更多行可提取，则返回 FALSE。

例子 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 * FROM authors"); if (!$result) { echo "An error occured.\n"; exit; } while ($row = pg_fetch_row($result, $i)) { for ($j=0; $j < count($row); $j++) { echo $row[$j] . " "; } echo "<br />\n"; } ?>

注: 从 4.1.0 开始，row 成为可选参数。每次调用 pg_fetch_row()，内部的行计数器都会加一。

参见 pg_query()，pg_fetch_array()，pg_fetch_object() 和 pg_fetch_result()。

add a note User Contributed Notes

pletiplot at seznam dot cz
07-Jun-2006 06:18


Note, that when you retrieve some PG boolean value, you get 't' or 'f' characters which are not compatible with PHP bool.

post at zeller-johannes dot de
27-Apr-2005 05:51


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).

maxnamara at yahoo dot com
14-Oct-2004 03:03


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;

}

Matthew Wheeler
23-May-2003 12:29


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.

imantr at cbn dot net dot id
24-Jul-2002 11:38


I use the following code to assigning query result to an array.



while ($row = pg_fetch_row($result)) $newArray[] = $row[0];



print_r($newArray);

darw75 at swbell dot net
23-Aug-2001 08:39


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>";


  }

rtreat2 at tampabay dot rr dot com
24-Oct-2000 08:41


the mysql way....





$rows = pg_numrows($result);


for ($i=0; $i < $rows; $i++){


    list($foo,$bar) = pg_fetch_row($result,$i);





    print ("$foo , $bar)\n");


}

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