PHP Unconference Europe 2015

msql_num_rows

(PHP 4, PHP 5)

msql_num_rowsGet number of rows in result

Descrierea

int msql_num_rows ( resource $query_identifier )

msql_num_rows() returns the number of rows in a result set.

Parametri

result

Rezultatul de tip resource, care este evaluat. Acest rezultat provine din apelul către msql_query ().

Valorile întoarse

Returns the number of rows in the result set.

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User Contributed Notes 1 note

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dd at hibm dot org
5 years ago
If you would like to just find out how many rows are returned by a query without actually using the results, then it's much more efficient to use SQL count function (specially for large tables with millions of rows).

<?php

$sql
= "SELECT COUNT(indexed-field) AS cnt FROM some-table";
$r = mysql_query($sql);
$row = mysql_fetch_object($r);
echo
$row->cnt;
?>
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