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(PECL CUBRID >= 8.3.1)
cubrid_query — Send a CUBRID query
$query
[, resource $conn_identifier
] ) cubrid_query() sends a unique query (multiple queries are not supported) to the
currently active database on the server that's associated with the specified conn_identifier
.
query
An SQL query
Data inside the query should be properly escaped.
conn_identifier
The CUBRID connection. If the connection identifier is not specified, the last connection opened by cubrid_connect() is assumed.
For SELECT, SHOW, DESCRIBE, EXPLAIN and other statements returning resultset,
cubrid_query() returns a resource on success, or FALSE
on error.
For other type of SQL statements, INSERT, UPDATE, DELETE, DROP, etc,
cubrid_query() returns TRUE
on success or FALSE
on error.
The returned result resource should be passed to cubrid_fetch_array() , and other functions for dealing with result tables, to access the returned data.
Use cubrid_num_rows() to find out how many rows were returned for a SELECT statement or cubrid_affected_rows() to find out how many rows were affected by a DELETE, INSERT, REPLACE, or UPDATE statement.
cubrid_query() will also fail and return FALSE
if the user does not have permission to access the table(s) referenced by the query.
Example #1 Invalid Query
The following query is syntactically invalid, so cubrid_query() fails and returns FALSE
.
<?php
$conn = cubrid_connect ( 'localhost' , 33000 , 'demodb' );
$result = cubrid_query ( 'SELECT * WHERE 1=1' );
if (! $result ) {
die( 'Invalid query: ' . cubrid_error ());
}
?>
Example #2 Valid Query
The following query is valid, so cubrid_query() returns a resource .
<?php
// This could be supplied by a user, for example
$firstname = 'fred' ;
$lastname = 'fox' ;
$conn = cubrid_connect ( 'localhost' , 33000 , 'demodb' );
cubrid_execute ( $conn , "DROP TABLE if exists friends" );
cubrid_execute ( $conn , "create table friends(firstname varchar,lastname varchar,address char(24),age int)" );
cubrid_execute ( $conn , "insert into friends values('fred','fox','home-1','20')" );
cubrid_execute ( $conn , "insert into friends values('blue','cat','home-2','21')" );
// Formulate Query
// This is the best way to perform an SQL query
// For more examples, see cubrid_real_escape_string()
$query = sprintf ( "SELECT firstname, lastname, address, age FROM friends WHERE firstname='%s' AND lastname='%s'" ,
cubrid_real_escape_string ( $firstname ),
cubrid_real_escape_string ( $lastname ));
// Perform Query
$result = cubrid_query ( $query );
// Check result
// This shows the actual query sent to CUBRID, and the error. Useful for debugging.
if (! $result ) {
$message = 'Invalid query: ' . cubrid_error () . "\n" ;
$message .= 'Whole query: ' . $query ;
die( $message );
}
// Use result
// Attempting to print $result won't allow access to information in the resource
// One of the cubrid result functions must be used
// See also cubrid_result(), cubrid_fetch_array(), cubrid_fetch_row(), etc.
while ( $row = cubrid_fetch_assoc ( $result )) {
echo $row [ 'firstname' ];
echo $row [ 'lastname' ];
echo $row [ 'address' ];
echo $row [ 'age' ];
}
// Free the resources associated with the result set
// This is done automatically at the end of the script
cubrid_free_result ( $result );
?>