oci_fetch_all()

(PHP 5, PHP 7, PECL OCI8 >= 1.1.0)

获取结果数据的所有行到一个数组

说明

oci_fetch_all(resource $statement,array &$output[,int $skip[,int $maxrows[,int $flags]]]): int

oci_fetch_all()从一个结果中获取所有的行到一个用户定义的数组。oci_fetch_all()返回获取的行数，出错则返回FALSE。$skip是从结果中获取数据时，最开始忽略的行数（默认值是 0，即从第一行开始）。$maxrows是要读取的行数，从第$skip行开始（默认值是-1，即所有行）。

$flags参数可以是下列值的任意组合：

• OCI_FETCHSTATEMENT_BY_ROW
• OCI_FETCHSTATEMENT_BY_COLUMN（默认值）
• OCI_NUM
• OCI_ASSOC

Example #1 oci_fetch_all()例子

<?php
/* oci_fetch_all example mbritton at verinet dot com (990624) */
$conn = oci_connect("scott", "tiger");
$stmt = oci_parse($conn, "select * from emp");
oci_execute($stmt);
$nrows = oci_fetch_all($stmt, $results);
if ($nrows > 0) {
   echo "<table border=\"1\">\n";
   echo "<tr>\n";
   foreach ($results as $key => $val) {
      echo "<th>$key</th>\n";
   }
   echo "</tr>\n";
   for ($i = 0; $i < $nrows; $i++) {
      echo "<tr>\n";
      foreach ($results as $data) {
         echo "<td>$data[$i]</td>\n";
      }
      echo "</tr>\n";
   }
   echo "</table>\n";
} else {
   echo "No data found<br />\n";
}
echo "$nrows Records Selected<br />\n";
oci_free_statement($stmt);
oci_close($conn);
?>

oci_fetch_all()如果出错则返回FALSE。

Note:

在 PHP 5.0.0 之前的版本必须使用ocifetchstatement()替代本函数。该函数名仍然可用，为向下兼容作为oci_fetch_all()的别名。不过其已被废弃，不推荐使用。

参数

$statement

有效的 OCI8 报表标识符由oci_parse()创建，被oci_execute()或REF CURSORstatement 标识执行。

$output

The variable to contain the returned rows.

LOB columns are returned as strings, where Oracle supports conversion.

See oci_fetch_array() for more information on how data and types are fetched.

$skip

The number of initial rows to discard when fetching the result. The default value is 0, so the first row onwards is returned.

$maxrows

The number of rows to return. The default is -1 meaning return all the rows from$skip+ 1 onwards.

$flags

Parameter$flagsindicates the array structure and whether associative arrays should be used.

oci_fetch_all() Array Structure Modes

Constant	Description
OCI_FETCHSTATEMENT_BY_ROW	The outer array will contain one sub-array per query row.
OCI_FETCHSTATEMENT_BY_COLUMN	The outer array will contain one sub-array per query column. This is the default.

Arrays can be indexed by column heading or numerically.

oci_fetch_all() Array Index Modes

Constant	Description
OCI_NUM	Numeric indexes are used for each column's array.
OCI_ASSOC	Associative indexes are used for each column's array. This is the default.

Use the addition operator "+" to choose a combination of array structure and index modes.

Oracle's default, non-case sensitive column names will have uppercase array keys. Case-sensitive column names will have array keys using the exact column case. Use var_dump() on$outputto verify the appropriate case to use for each query.

Queries that have more than one column with the same name should use column aliases. Otherwise only one of the columns will appear in an associative array.

返回值

Returns the number of rows in$output, which may be 0 or more,或者在失败时返回FALSE.

范例

Example #2 oci_fetch_all() example

<?php
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
if (!$conn) {
    $e = oci_error();
    trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}
$stid = oci_parse($conn, 'SELECT POSTAL_CODE, CITY FROM locations WHERE ROWNUM < 3');
oci_execute($stid);
$nrows = oci_fetch_all($stid, $res);
echo "$nrows rows fetched<br>\n";
var_dump($res);
// var_dump output is:
//    2 rows fetched
//    array(2) {
//      ["POSTAL_CODE"]=>
//      array(2) {
//        [0]=>
//        string(6) "00989x"
//        [1]=>
//        string(6) "10934x"
//      }
//      ["CITY"]=>
//      array(2) {
//        [0]=>
//        string(4) "Roma"
//        [1]=>
//        string(6) "Venice"
//      }
//    }
// Pretty-print the results
echo "<table border='1'>\n";
foreach ($res as $col) {
    echo "<tr>\n";
    foreach ($col as $item) {
        echo "    <td>".($item !== null ? htmlentities($item, ENT_QUOTES) : "")."</td>\n";
    }
    echo "</tr>\n";
}
echo "</table>\n";
oci_free_statement($stid);
oci_close($conn);
?>

Example #3 oci_fetch_all() example with OCI_FETCHSTATEMENT_BY_ROW

<?php
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
if (!$conn) {
    $e = oci_error();
    trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}
$stid = oci_parse($conn, 'SELECT POSTAL_CODE, CITY FROM locations WHERE ROWNUM < 3');
oci_execute($stid);
$nrows = oci_fetch_all($stid, $res, null, null, OCI_FETCHSTATEMENT_BY_ROW);
echo "$nrows rows fetched<br>\n";
var_dump($res);
// Output is:
//    2 rows fetched
//    array(2) {
//      [0]=>
//      array(2) {
//        ["POSTAL_CODE"]=>
//        string(6) "00989x"
//        ["CITY"]=>
//        string(4) "Roma"
//      }
//      [1]=>
//      array(2) {
//        ["POSTAL_CODE"]=>
//        string(6) "10934x"
//        ["CITY"]=>
//        string(6) "Venice"
//      }
//    }
oci_free_statement($stid);
oci_close($conn);
?>

Example #4 oci_fetch_all() with OCI_NUM

<?php
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
if (!$conn) {
    $e = oci_error();
    trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}
$stid = oci_parse($conn, 'SELECT POSTAL_CODE, CITY FROM locations WHERE ROWNUM < 3');
oci_execute($stid);
$nrows = oci_fetch_all($stid, $res, null, null, OCI_FETCHSTATEMENT_BY_ROW + OCI_NUM);
echo "$nrows rows fetched<br>\n";
var_dump($res);
// Output is:
//    2 rows fetched
//    array(2) {
//      [0]=>
//      array(2) {
//        [0]=>
//        string(6) "00989x"
//        [1]=>
//        string(4) "Roma"
//      }
//      [1]=>
//      array(2) {
//        [0]=>
//        string(6) "10934x"
//        [1]=>
//        string(6) "Venice"
//      }
//    }
oci_free_statement($stid);
oci_close($conn);
?>

注释

Note:

Using$skipis very inefficient. All the rows to be skipped are included in the result set that is returned from the database to PHP. They are then discarded. It is more efficient to use SQL to restrict the offset and range of rows in the query. See oci_fetch_array() for an example.

Note:

Queries that return a large number of rows can be more memory efficient if a single-row fetching function like oci_fetch_array() is used.

Note:

查询返回巨大数量的数据行时，通过增大oci8.default_prefetch值或使用oci_set_prefetch()可显著提高性能。

Note:

In PHP versions before 5.0.0 you must use ocifetchstatement() instead.在当前版本中，旧的函数名还可以被使用，但已经被废弃并不建议使用。

参见

• oci_fetch()Fetches the next row into result-buffer
• oci_fetch_array()Returns the next row from a query as an associative or numeric array
• oci_fetch_assoc()Returns the next row from a query as an associative array
• oci_fetch_object()Returns the next row from a query as an object
• oci_fetch_row()Returns the next row from a query as a numeric array
• oci_set_prefetch()设置预提取行数

Beware that only numerically indexed results will be returned if
OCI_NUM is used.

The Skip and MaxRows parameters were not added until version 4.2.1.
Previous versions of php used this syntax:
      int ocifetchstatement ( resource stmt, array &output)
The function also took a third parameter that was not documented. ( I assume that it was a flag)