oci_num_rows

(PHP 5, PHP 7, PHP 8, PECL OCI8 >= 1.1.0)

oci_num_rows — 返回语句执行后受影响的行数

说明

oci_num_rows(resource $stmt): int

oci_num_rows() 返回语句执行后受影响的行数。

注意:
本函数并不返回 SELECT 查询出来的行数！对于 SELECT 语句本函数将返回用 oci_fetch*() 函数取到缓冲区的行数。

示例 #1 oci_num_rows() 例子


<?php
    echo "<pre>";
    $conn = oci_connect("scott", "tiger");

    $stmt = oci_parse($conn, "create table emp2 as select * from emp");
    oci_execute($stmt);
    echo oci_num_rows($stmt) . " rows inserted.<br />";
    oci_free_statement($stmt);

    $stmt = oci_parse($conn, "delete from emp2");
    oci_execute($stmt, OCI_DEFAULT);
    echo oci_num_rows($stmt) . " rows deleted.<br />";
    oci_commit($conn);
    oci_free_statement($stmt);

    $stmt = oci_parse($conn, "drop table emp2");
    oci_execute($stmt);
    oci_free_statement($stmt);

    oci_close($conn);
    echo "</pre>";
?>

oci_num_rows() 在出错时返回 false。

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

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User Contributed Notes 5 notes

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pluueer at hotmail dot com ¶

12 years ago


If you want to return te number of rows without fetching all data it might by more efficient to use this code (correct me if I'm wrong):

$sql_query = 'SELECT COUNT(*) AS NUMBER_OF_ROWS FROM (' . $your_query . ')';

$stmt= oci_parse($conn, $sql_query);

oci_define_by_name($stmt, 'NUMBER_OF_ROWS', $number_of_rows);

oci_execute($stmt);

oci_fetch($stmt);

echo $number_of_rows;

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-5

Dawid Krysiak ¶

5 years ago


oci_num_rows() called after running i.e. TRUNCATE query, always returns 0.

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-2

raywachaga at gmail dot com ¶

3 years ago


<?php if ( oci_num_rows($result) == false )  ?>

You can use the snippet above to test out if a select statement returned any rows, it won't do a count but it comes in handy

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-12

justin at flakmag dot com ¶

21 years ago


It appears the easiest workaround if you want to get numrows without moving to the end of the result set is to use:


numrows = OCIFetchStatement(...);

OCIExecute(...);


So that the execute re-executes the query. It's horribly inefficient to query twice, but it works.

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-23

batti at digito dot com ¶

22 years ago


this function can be used with select statement, and also return affected number of rows. 

But remember this, use this after fetch statement.

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