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。

Note:
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。

Example #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。

Note:
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。

User Contributed Notes

raywachaga at gmail dot com 15-Sep-2018 01:53


<?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

Dawid Krysiak 22-Dec-2016 03:21


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

pluueer at hotmail dot com 20-Apr-2010 02:51


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;

justin at flakmag dot com 26-Aug-2000 06:59


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.

batti at digito dot com 16-Feb-2000 08:52


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


But remember this, use this after fetch statement.