SQL ??? ???? ?? ???? ???? ?? PHP?? `mysql_` ??? ???? ????? ??? ?? ????
Dec 18, 2024 am 06:51 AM
MySQL ?? ?? ??? ?? ?? ???
??
mysql_ ?? ????? ??? ??????? ????? ??? ?? ??? ?? PHP ??? ???? ????? ??? ????. ??? ?? ? ?? ??? ???? ??. ? ?? ??? mysql_ ??? ??? ???? ???? ???? ???? ?? ??? ???? ????.
?? ??
<?php
// Set HTTP headers for character encoding
header('Content-type: text/html; charset=utf-8');
// Enable error reporting for development and testing
error_reporting(E_ALL | E_STRICT);
ini_set('display_errors', 1);
// In production, set 'display_errors' to 0 to suppress PHP error messages
// Database configuration (modify as needed)
$config = [
'host' => '127.0.0.1',
'user' => 'my_user',
'pass' => 'my_pass',
'db' => 'my_database'
];
// Connect to the database and disable MySQL error output
$connection = @mysql_connect($config['host'], $config['user'], $config['pass']);
if (!$connection) {
trigger_error('Unable to connect to database: ' . mysql_error(), E_USER_ERROR);
}
// Select the database
if (!mysql_select_db($config['db'])) {
trigger_error('Unable to select db: ' . mysql_error(), E_USER_ERROR);
}
// Set character encoding for the connection
if (!mysql_set_charset('utf8')) {
trigger_error('Unable to set charset for db connection: ' . mysql_error(), E_USER_ERROR);
}
// Accept and sanitize POST values
$id = (int) $_POST['id']; // To prevent SQL injection
$name = mysql_real_escape_string($_POST['name']); // Protects against SQL injection
// Construct and execute the UPDATE query
$result = mysql_query(
'UPDATE tablename SET name = "' . $name . '" WHERE id = "' . $id . '"'
);
// Check the result and provide feedback
if ($result) {
echo htmlentities($name, ENT_COMPAT, 'utf-8') . ' updated.';
} else {
trigger_error('Unable to update db: ' . mysql_error(), E_USER_ERROR);
}
?>
?? ?? ??
? ?? ??? ??? ?? ?? ??? ????. ??:
- SQL ?? ??: POST ? 'id' ? 'name'? ??? ???? ?? ?? ? ?????.
- ?? ??: ??? ??? ???? ?? ???? ?? ?? ????? ??? ?? ???? ???? ????. ??? ??? ???? ??? ?? ?????.
- ???? ??: ?????? ??? ?? ???? ?? ??? ??? ??? ?? 'utf8'? ?????.
- ??? ??: WHERE ?? requestId ???? ??? ??? ?????. ?? ? ?? ?? ??? ??? ???? ????.
??
??? ??? ??? mysql_ ??? ???? ???? ??? ? ?? ?????? ??? ??? ? ????. PDO? ??? PHP ??????? ???? ?? ?????, ? ?? ??? ??? ? mysql_ ??? ???? ???? ?? ??? ??? ?????.
? ??? SQL ??? ???? ?? ???? ???? ?? PHP?? `mysql_` ??? ???? ????? ??? ?? ????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!
? AI ??
Undress AI Tool
??? ???? ??
Undresser.AI Undress
???? ?? ??? ??? ?? AI ?? ?
AI Clothes Remover
???? ?? ???? ??? AI ?????.
Clothoff.io
AI ? ???
Video Face Swap
??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!
?? ??
??? ??
???++7.3.1
???? ?? ?? ?? ???
SublimeText3 ??? ??
??? ??, ???? ?? ????.
???? 13.0.1 ???
??? PHP ?? ?? ??
???? CS6
??? ? ?? ??
SublimeText3 Mac ??
? ??? ?? ?? ?????(SublimeText3)
MySQL ??? ?? ??? ?? ?? ??
Jul 04, 2025 am 01:44 AM
TOSECIBERYNECTTOEREMOTEMYSQLSERVER, USESSHTUNNENG, CONFIGUREMYSQLFORREMOTEACCESS, SETFIREWALLRULES ? CONSIDERSSLENCRYPTION .First, SpectionANSSHTUNNELWITHSSH-L3307 : LocalHost : 3306user@remote-Server-NandConnectViamySQL-H127.0.1-P3307.second, editmys
MySQL ??? ????? ?? ?? ?? ??
Jul 03, 2025 am 02:34 AM
Relationshipsbetweentables.TheyPretorPhanEdrecords, andCancascadeCangeAutomically. BotheThustusEtheInnodbstorageEngine ? foreignKeyColumnsMatchThatteTeTeTeTeTeFeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTeTePle
MySQL?? mysqldump? ???? ?? ??? ?????
Jul 06, 2025 am 02:55 AM
MySQLDump? MySQL ??????? ??? ??? ???? ???? ?????. ??????? ???? ?? ?? ? ?? ?? ???? SQL ??? ?????. 1. ?? ??? ????? ??? ?????? ??? ???? ??? SQL ???? ?????. 2. ??? ?????? ?? ??? ??? ???? TB ?? ???? ?? ???? ???? ????. 3. ???? ???-single transaction,-databases,-all-databases,-routines ?; 4. MySQL ??? ???? ?? ?? ?? ?? ?? ? ??? ?? ??? ???? ? ????. 5. ??? ????? ????? ?? ? ?? ??? ???? ?? ????.
?? ?? ??? ?? ?? MySQL ?? ?? ?? ??
Jul 04, 2025 am 02:46 AM
MySQL ??? ?? ??? ?? ?? ??? ?? ??? ??????. 1. ?? ?? ?? ?? ???? Slow_Query_Log ? Long_Query_Time; 2. ???? ??? ?? ??? ???? ? ????? query_time, lock_time, rows_examined? ?? ?? ??? ???? ????. 3. ??? ????? ???? ?? mysqldumpslow ?? pt-query idigest ??? ??????. 4. ??? ???? ??? ??, ??*???*, ??? ?? ?? ?? ?????. ?? ??, user_id? ???? ???? ?? ? ?? ?? ?? ??? ?? ???? ???? ? ????.
MySQL ? ? ???? NULL ?? ?????
Jul 05, 2025 am 02:46 AM
MySQL?? NULL ?? ?? ? ? 1. ???? ?? ? ? ? ??? NotNull? ???? ?? ??? NULL? ?????. 2. iSnull ?? ISNOTNULL = ??! =; 3. Ifnull ?? Coalesce ??? ????? ???? ???? ? ??? ? ????. 4. ?? ?? ????? NULL ?? ?? ??? ?? ???? ??? ?? ? ORM ??? ?? ?? ?????? ??????. NULL? ???? ?? ?? ???? ??? ???? ?? ?? ?? ????. ??? ???? ??, ?? ? ???? ?? ? ??? ?? ??? ??? ?? ???????. ??? ??? ???? ??? ?? ?? ??? ????? ?? ? ????.
MySQL ??? ?? ???? ???
Jul 03, 2025 am 02:32 AM
MySQL? ?? ????? ?????? ?? ??? ?????. 1. MySQL ?? ??, sudosystemctlstopmysql ?? sudosystemctlstopmysqld? ??????. 2. -skip-grant-tables ???? mysql? ???? sudomysqld-skip-grant-tables &; 3. MySQL? ????? ?? SQL ??? ???? FlushPrivileges; Alteruser'Root '@'localHost'IndifiedBy'Your_new? ?? ??? ?? ????? ??????.
MySQL?? ?????? ? ??? ?? ??
Jul 06, 2025 am 02:41 AM
MySQL ?????? ? ???? ??? ??? information_schema? ?? ????? ?? ? ??? ??? ? ????. 1. ?? ?????? ?? ?? : SQL ?? ???? selecttable_schemaas'database ', sum (data_length index_length)/1024/1024as'size (mb) 'frominformation_schema.tablessgroupbytable_schema; ?? ??????? ? ??? ??? ?? ??????? ???? ??? ?? ? ? ????. 2. ?? ??? ??? ?????? : selectta? ??????
MySQL?? ??? ?? ? ???? ??? ?????
Jul 08, 2025 am 02:51 AM
?? ?? ? ?? ?? ??? ??? ??? ?????? ?? ??? ??? ?????? ??? ?????? ?????? ??? ?????. ? ?? ?? ???? ????. ??, ??????, ??? ? ??? ?? ??? UTF8MB4? ???? ???? ShowCreatedAtabase/Table? ???? ? Alter ??? ??????. ??, ?????? ??? ? UTF8MB4 ?? ??? ???? ?? ?? ??? ????? SetNames? ??????. ??, ?? ??? ????? ???? UTF8MB4_UNICODE_CI? ???? ?? ? ????? ???? ???? ?????? ???? ?? ? ? ?? ?? ??? ????? ??????.
