ScotlandPHP 2019


(PHP 4 >= 4.0.6, PHP 5, PHP 7)

fbsql_num_rowsObtener el número de filas del resultado


fbsql_num_rows ( resource $result ) : int

Obtiene el número de filas del result set dado.

Esta función solo es válida para SELECTs. Para obtener el número de filas devueltas por una consulta del tipo INSERT, UPDATE o DELETE, use fbsql_affected_rows().



Un identificador de resultado devuelto por fbsql_query() o fbsql_db_query().

Valores devueltos

Devuelve el número de filas devueltas por el último SELECT.


Ejemplo #1 Ejemplo de fbsql_num_rows()



$result fbsql_query("SELECT * FROM table1;"$link);
$num_rows fbsql_num_rows($result);

"$num_rows Filas\n";


Ver también

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User Contributed Notes 1 note

daggillies at yahoo dot com
16 years ago
Note that this function will not always return the actual size of a result set. For example, if you are doing a two-table join along the lines of "SELECT * FROM T1,T2 where T1.x=T2.x" you will get a result of -1. This is due to the 'lazy execution' model in FrontBase whereby result rows are only returned as you request them. If you absolutely have to have the number of rows in advance then you will have to use COUNT(*) first. Most of the time you do not need to know the exact number of rows; it is good enough to know if the size of the result set is non-zero.

David Gillies
San Jose
Costa Rica
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