Backend DevelopmentPHP TutorialDetailed explanation of the configuration example of php using pdo to connect to sqlite3Detailed explanation of the configuration example of php using pdo to connect to sqlite3
This article mainly introduces the configuration method of php using pdo to connect sqlite3, and combines the example form with a more detailed analysis of the related precautions of php based on pdo to operate sqlite3, need Friends can refer to the following
The example of this article describes the configuration method of php using pdo to connect to sqlite3. Share it with everyone for your reference, the details are as follows:
When I first started using php+sqlite, I always thought that I was using sqlite3. In fact, it was not the case. PHP only started to default from php5 >=5.3.0 To support sqlite3
, please refer to the official document http://www.php.net/manual/zh/sqlite3.open.php
Default methodInterface ：
##public void SQLite3::open ( string $filename [, int $flags = SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE [, string $encryption_key ]] )
Use When operating the database with PHP, I found that PHP only supports Sqlite2 by default and does not support the latest version of Sqlite3. If you want to support Sqlite3, you must use PDO. To use PDO, you need to load the two modules php_pdo.dll and php_pdo_sqlite.dll in php.ini. As follows:extension=php_pdo.dll extension=php_pdo_sqlite.dllIf pdo is not used, even if you turn on the above parameters, you are still using sqlite2. If you don’t believe me, please visit the generated database and see if there is a prompt at the beginning of the file:
** This file contains an SQLite 2.1 database **
When the php environment does not enable the above supported configuration, the following error will be reported:Fatal error: Call to undefined function sqlite_open()
sqlite3 example:<html>
<?php
//$dsn = 'sqlite:sql.db';
try
{
//$dbh = new PDO($dsn, $user, $password); //建立连接
// $dbh = new PDO('sqlite:yourdatabase.db');
$dbh = new PDO('sqlite:itlife365.com');
echo 'Create Db ok' ;
//建表
$dbh->exec("CREATE TABLE itlife365(id integer,name varchar(255))");
echo 'Create Table itlife365 ok<BR>';
$dbh->exec("INSERT INTO itlife365 values(1,'itlife365.com')");
echo 'Insert Data ok<BR>';
$dbh->beginTransaction();
$sth = $dbh->prepare('SELECT * FROM itlife365');
$sth->execute();
//获取结果
$result = $sth->fetchAll();
print_r($result);
$dsn=null;
}
catch (PDOException $e)
{
echo 'Connection failed: ' . $e->getMessage();
$dsn = null;
}
?>
</html>
<?php $dbh = null;//或使用unset($dbh); ?>The above is the detailed content of Detailed explanation of the configuration example of php using pdo to connect to sqlite3. For more information, please follow other related articles on the PHP Chinese website!
What is the best way to send an email using PHP?May 08, 2025 am 12:21 AMThebestapproachforsendingemailsinPHPisusingthePHPMailerlibraryduetoitsreliability,featurerichness,andeaseofuse.PHPMailersupportsSMTP,providesdetailederrorhandling,allowssendingHTMLandplaintextemails,supportsattachments,andenhancessecurity.Foroptimalu
Best Practices for Dependency Injection in PHPMay 08, 2025 am 12:21 AMThe reason for using Dependency Injection (DI) is that it promotes loose coupling, testability, and maintainability of the code. 1) Use constructor to inject dependencies, 2) Avoid using service locators, 3) Use dependency injection containers to manage dependencies, 4) Improve testability through injecting dependencies, 5) Avoid over-injection dependencies, 6) Consider the impact of DI on performance.
PHP performance tuning tips and tricksMay 08, 2025 am 12:20 AMPHPperformancetuningiscrucialbecauseitenhancesspeedandefficiency,whicharevitalforwebapplications.1)CachingwithAPCureducesdatabaseloadandimprovesresponsetimes.2)Optimizingdatabasequeriesbyselectingnecessarycolumnsandusingindexingspeedsupdataretrieval.
PHP Email Security: Best Practices for Sending EmailsMay 08, 2025 am 12:16 AMThebestpracticesforsendingemailssecurelyinPHPinclude:1)UsingsecureconfigurationswithSMTPandSTARTTLSencryption,2)Validatingandsanitizinginputstopreventinjectionattacks,3)EncryptingsensitivedatawithinemailsusingOpenSSL,4)Properlyhandlingemailheaderstoa
How do you optimize PHP applications for performance?May 08, 2025 am 12:08 AMTooptimizePHPapplicationsforperformance,usecaching,databaseoptimization,opcodecaching,andserverconfiguration.1)ImplementcachingwithAPCutoreducedatafetchtimes.2)Optimizedatabasesbyindexing,balancingreadandwriteoperations.3)EnableOPcachetoavoidrecompil
What is dependency injection in PHP?May 07, 2025 pm 03:09 PMDependencyinjectioninPHPisadesignpatternthatenhancesflexibility,testability,andmaintainabilitybyprovidingexternaldependenciestoclasses.Itallowsforloosecoupling,easiertestingthroughmocking,andmodulardesign,butrequirescarefulstructuringtoavoidover-inje
Best PHP Performance Optimization TechniquesMay 07, 2025 pm 03:05 PMPHP performance optimization can be achieved through the following steps: 1) use require_once or include_once on the top of the script to reduce the number of file loads; 2) use preprocessing statements and batch processing to reduce the number of database queries; 3) configure OPcache for opcode cache; 4) enable and configure PHP-FPM optimization process management; 5) use CDN to distribute static resources; 6) use Xdebug or Blackfire for code performance analysis; 7) select efficient data structures such as arrays; 8) write modular code for optimization execution.
PHP Performance Optimization: Using Opcode CachingMay 07, 2025 pm 02:49 PMOpcodecachingsignificantlyimprovesPHPperformancebycachingcompiledcode,reducingserverloadandresponsetimes.1)ItstorescompiledPHPcodeinmemory,bypassingparsingandcompiling.2)UseOPcachebysettingparametersinphp.ini,likememoryconsumptionandscriptlimits.3)Ad
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
WebStorm Mac version
Useful JavaScript development tools
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
SublimeText3 English version
Recommended: Win version, supports code prompts!
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
