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Direktori : /proc/thread-self/root/proc/thread-self/root/var/softaculous/moodle43/ |
Current File : //proc/thread-self/root/proc/thread-self/root/var/softaculous/moodle43/check_utf8.php |
<?php /** * Does the database server claim to have support for UTF-8 Multibyte (utf8mb4) collation? * * libmysql supports utf8mb4 since 5.5.3 (same version as the MySQL server). mysqlnd supports utf8mb4 since 5.0.9. * * @return boolean * * @since CMS 3.5.0 */ function serverClaimsUtf8mb4Support() { if(!is_large_prefix_enabled()){ return false; } $client_version = mysqli_get_client_info(); if (strpos($client_version, 'mysqlnd') !== false) { $client_version = preg_replace('/^\D+([\d.]+).*/', '$1', $client_version); return version_compare($client_version, '5.0.9', '>='); } else { return version_compare($client_version, '5.5.3', '>='); } } function get_dbtype() { $con = mysqli_connect("[[softdbhost]]","[[softdbuser]]","[[softdbpass]]","[[softdb]]"); $details = mysqli_get_server_info($con); if(preg_match('/mariadb/is', $details)){ return 'mariadb'; } return 'mysqli'; } function get_engine_type(){ return 'innodb'; } /** * Get the version of the database connector. * * @return string The database connector version. * * @since 12.1 */ function getVersion(){ global $con; $con = mysqli_connect("[[softdbhost]]","[[softdbuser]]","[[softdbpass]]","[[softdb]]"); $ver = mysqli_get_server_info($con); if(preg_match('/mariadb/is', $ver)){ preg_match('/-(.*?)-mariadb/is', $ver, $matches); if(empty($matches[1])){ preg_match('/(.*?)-mariadb/is', $ver, $matches); } if(!empty($matches[1])){ $ver = $matches[1]; } } return $ver; } function get_row_format($table = null) { global $con; $rowformat = null; if (is_antelope_file_format_no_more_supported()) { $rowformat = 'Barracuda'; return $rowformat; } $sql = "SHOW VARIABLES LIKE 'innodb_file_format'"; $result = mysqli_query($con, $sql); if ($rec = $result->fetch_assoc()) { // MySQL 8 BC: information_schema.* returns the fields in upper case. $rec = array_change_key_case($rec, CASE_LOWER); if (isset($table)) { $rowformat = $rec['row_format']; } else { $rowformat = $rec['value']; } } return $rowformat; } function is_antelope_file_format_no_more_supported() { // Breaking change: Antelope file format support has been removed from both MySQL and MariaDB. // The following InnoDB file format configuration parameters were deprecated and then removed: // - innodb_file_format // - innodb_file_format_check // - innodb_file_format_max // - innodb_large_prefix // 1. MySQL: deprecated in 5.7.7 and removed 8.0.0+. $ismysqlge8d0d0 = (get_dbtype() == 'mysqli') && version_compare(getVersion(), '8.0.0', '>='); // 2. MariaDB: deprecated in 10.2.0 and removed 10.3.1+. $ismariadbge10d3d1 = (get_dbtype() == 'mariadb') && version_compare(getVersion(), '10.3.1', '>='); return $ismysqlge8d0d0 || $ismariadbge10d3d1; } function is_compressed_row_format_supported($cached = true) { $engine = get_engine_type(); $info = getVersion(); if (version_compare($info, '5.5.0') < 0) { // MySQL 5.1 is not supported here because we cannot read the file format. $compressedrowformatsupported = false; } else if ($engine !== 'innodb' and $engine !== 'xtradb') { // Other engines are not supported, most probably not compatible. $compressedrowformatsupported = false; } else if (!is_file_per_table_enabled()) { $compressedrowformatsupported = false; } else if (get_row_format() !== 'Barracuda') { $compressedrowformatsupported = false; } else { // All the tests passed, we can safely use ROW_FORMAT=Compressed in sql statements. $compressedrowformatsupported = true; } return $compressedrowformatsupported; } function is_file_per_table_enabled() { global $con; $sql = "SHOW VARIABLES LIKE 'innodb_file_per_table'"; $result = mysqli_query($con, $sql); if ($rec = $result->fetch_assoc()) { // MySQL 8 BC: information_schema.* returns the fields in upper case. $rec = array_change_key_case($rec, CASE_LOWER); if ($rec['value'] == 'ON') { return true; } } return false; } function get_row_format_sql($engine = null, $collation = null) { $rowformat = ''; $serverClaimsUtf8mb4Support = serverClaimsUtf8mb4Support(); $engine = get_engine_type(); if (($engine === 'innodb' || $engine === 'xtradb') && !empty($serverClaimsUtf8mb4Support)) { if (is_compressed_row_format_supported()) { $rowformat = "ROW_FORMAT=COMPRESSED"; } else { $rowformat = "ROW_FORMAT=DYNAMIC"; } } return $rowformat; } function is_large_prefix_enabled() { global $con; if (is_antelope_file_format_no_more_supported()) { // Breaking change: Antelope file format support has been removed, only Barracuda. return true; } $sql = "SHOW VARIABLES LIKE 'innodb_large_prefix'"; $result = mysqli_query($con, $sql); if ($rec = $result->fetch_assoc()) { // MySQL 8 BC: information_schema.* returns the fields in upper case. $rec = array_change_key_case($rec, CASE_LOWER); if ($rec['value'] == 'ON') { return true; } } return false; } function detect_collation(){ // Create connection $con = mysqli_connect("[[softdbhost]]","[[softdbuser]]","[[softdbpass]]","[[softdb]]"); // We want only utf8 compatible collations. $collation = null; $query = "SHOW COLLATION WHERE Collation LIKE 'utf8mb4\_%' AND Charset = 'utf8mb4'"; $result = mysqli_query($con, $query); while ($row = mysqli_fetch_assoc($result)) { $collation = $row['Collation']; if (strtoupper($row['Default']) === 'YES') { $collation = $row['Collation']; break; } } if (!$collation) { $result = mysqli_fetch_array(mysqli_query($con, "SELECT @@collation_database;")); $value = $result['@@collation_database']; if (strpos($value, 'utf8_') === 0 || strpos($value, 'utf8mb4_') === 0) { $collation = $value; } } return $collation; } $serverClaimsUtf8mb4Support = serverClaimsUtf8mb4Support(); $row_format = get_row_format_sql(); $collation = detect_collation(); if(!empty($serverClaimsUtf8mb4Support) && !empty($row_format)){ echo $utf8 = '<claim_utf8>utf8mb4</claim_utf8>'; echo '</br>'; echo '<row_format>'.$row_format.'</row_format>'; } if(!empty($utf8) && $utf8 == '<claim_utf8>utf8mb4</claim_utf8>'){ echo '</br>'; echo '<collation>'.$collation.'</collation>'; } ?>