maxdb_query
maxdb::query
(PECL maxdb >= 1.0)
maxdb_query -- maxdb::query — Performs a query on the database
Description
Procedural style
Object oriented style
The maxdb_query() function is used to simplify the
act of performing a query against the database represented by the
link
parameter.
Return Values
Returns TRUE
on success or FALSE
on failure. For SELECT, SHOW, DESCRIBE or
EXPLAIN maxdb_query() will return
a result resource.
Examples
Example #1 Object oriented style
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
/* Create table doesn't return a resultset */
if ($maxdb->query("CREATE TABLE temp.mycity LIKE hotel.city") === TRUE) {
printf("Table mycity successfully created.\n");
}
/* Select queries return a resultset */
if ($result = $maxdb->query("SELECT name FROM hotel.city")) {
printf("Select returned %d rows.\n", $result->num_rows);
/* free result set */
$result->close();
}
/* If we have to retrieve large amount of data we use MAXDB_USE_RESULT */
if ($result = $maxdb->query("SELECT * FROM hotel.city", MAXDB_USE_RESULT)) {
$result->close();
}
$maxdb->close();
?>
Example #2 Procedural style
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
/* Create table doesn't return a resultset */
if (maxdb_query($link, "CREATE TABLE temp.mycity LIKE hotel.city") === TRUE) {
printf("Table mycity successfully created.\n");
}
/* Select queries return a resultset */
if ($result = maxdb_query($link, "SELECT name FROM hotel.city")) {
printf("Select returned %d rows.\n", maxdb_num_rows($result));
/* free result set */
maxdb_free_result($result);
}
/* If we have to retrieve large amount of data we use MAXDB_USE_RESULT */
if ($result = maxdb_query($link, "SELECT * FROM hotel.city", MAXDB_USE_RESULT)) {
maxdb_free_result($result);
}
maxdb_close($link);
?>
The above example will output something similar to:
Table mycity successfully created. Select returned 25 rows.
See Also
- maxdb_real_query() - Execute an SQL query
- maxdb_multi_query() - Performs a query on the database
- maxdb_free_result() - Frees the memory associated with a result
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- MaxDB
- maxdb_affected_rows
- maxdb_autocommit
- maxdb_bind_param
- maxdb_bind_result
- maxdb_change_user
- maxdb_character_set_name
- maxdb_client_encoding
- maxdb_close_long_data
- maxdb_close
- maxdb_commit
- maxdb_connect_errno
- maxdb_connect_error
- maxdb_connect
- maxdb_data_seek
- maxdb_debug
- maxdb_disable_reads_from_master
- maxdb_disable_rpl_parse
- maxdb_dump_debug_info
- maxdb_embedded_connect
- maxdb_enable_reads_from_master
- maxdb_enable_rpl_parse
- maxdb_errno
- maxdb_error
- maxdb_escape_string
- maxdb_execute
- maxdb_fetch_array
- maxdb_fetch_assoc
- maxdb_fetch_field_direct
- maxdb_fetch_field
- maxdb_fetch_fields
- maxdb_fetch_lengths
- maxdb_fetch_object
- maxdb_fetch_row
- maxdb_fetch
- maxdb_field_count
- maxdb_field_seek
- maxdb_field_tell
- maxdb_free_result
- maxdb_get_client_info
- maxdb_get_client_version
- maxdb_get_host_info
- maxdb_get_metadata
- maxdb_get_proto_info
- maxdb_get_server_info
- maxdb_get_server_version
- maxdb_info
- maxdb_init
- maxdb_insert_id
- maxdb_kill
- maxdb_master_query
- maxdb_more_results
- maxdb_multi_query
- maxdb_next_result
- maxdb_num_fields
- maxdb_num_rows
- maxdb_options
- maxdb_param_count
- maxdb_ping
- maxdb_prepare
- maxdb_query
- maxdb_real_connect
- maxdb_real_escape_string
- maxdb_real_query
- maxdb_report
- maxdb_rollback
- maxdb_rpl_parse_enabled
- maxdb_rpl_probe
- maxdb_rpl_query_type
- maxdb_select_db
- maxdb_send_long_data
- maxdb_send_query
- maxdb_server_end
- maxdb_server_init
- maxdb_set_opt
- maxdb_sqlstate
- maxdb_ssl_set
- maxdb_stat
- maxdb_stmt_affected_rows
- maxdb_stmt_bind_param
- maxdb_stmt_bind_result
- maxdb_stmt_close_long_data
- maxdb_stmt_close
- maxdb_stmt_data_seek
- maxdb_stmt_errno
- maxdb_stmt_error
- maxdb_stmt_execute
- maxdb_stmt_fetch
- maxdb_stmt_free_result
- maxdb_stmt_init
- maxdb_stmt_num_rows
- maxdb_stmt_param_count
- maxdb_stmt_prepare
- maxdb_stmt_reset
- maxdb_stmt_result_metadata
- maxdb_stmt_send_long_data
- maxdb_stmt_sqlstate
- maxdb_stmt_store_result
- maxdb_store_result
- maxdb_thread_id
- maxdb_thread_safe
- maxdb_use_result
- maxdb_warning_count
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