PHP 5.5.16 is released

fbsql_query

(PHP 4 >= 4.0.6, PHP 5)

fbsql_querySend a FrontBase query

Descrierea

resource fbsql_query ( string $query [, resource $link_identifier [, int $batch_size ]] )

Sends a query to the currently active database on the server.

If the query succeeds, you can call fbsql_num_rows() to find out how many rows were returned for a SELECT statement or fbsql_affected_rows() to find out how many rows were affected by a DELETE, INSERT, REPLACE, or UPDATE statement.

Parametri

query

The SQL query to be executed.

Notă:

The query string shall always end with a semicolon.

link_identifier

Un identificator de legătură FrontBase întors de fbsql_connect() sau fbsql_pconnect ().

Dacă nu este specificat, funcția va încerca să găsească o legătură deschisă către serverul FrontBase și dacă nu este găsită nici o astfel de legătură, se va încerca crearea uneia, ca și la apelarea fbsql_connect() fără argumente.

batch_size

Valorile întoarse

fbsql_query() returns TRUE (non-zero) or FALSE to indicate whether or not the query succeeded. A return value of TRUE means that the query was legal and could be executed by the server. It does not indicate anything about the number of rows affected or returned. It is perfectly possible for a query to succeed but affect no rows or return no rows.

For SELECT statements, fbsql_query() returns a new result identifier that you can pass to fbsql_result().

fbsql_query() will also fail and return FALSE if you don't have permission to access the table(s) referenced by the query.

Exemple

The following query is syntactically invalid, so fbsql_query() fails and returns FALSE:

Example #1 fbsql_query() example

<?php
$result 
fbsql_query("SELECT * WHERE 1=1")
    or die (
"Invalid query");
?>

The following query is semantically invalid if my_col is not a column in the table my_tbl, so fbsql_query() fails and returns FALSE:

Example #2 fbsql_query() example

<?php
$result 
fbsql_query ("SELECT my_col FROM my_tbl;")
    or die (
"Invalid query");
?>

Vedeți de asemenea

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