如何安装php7 sqlite3
Posted
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了如何安装php7 sqlite3相关的知识,希望对你有一定的参考价值。
参考技术A 在php.ini里去掉 extension=php_sqlite.dll extension=php_pdo.dll extension=php_pdo_sqlite.dll 前面的“;” 注意顺序与上面那一致,然后重启服务器就可以了本回答被提问者采纳PHP连接SQLite数据库教程
SQLite3扩展名在PHP 5.3.0+
以上都会默认启用。可以在编译时使用--without-sqlite3
来禁用它。
Windows用户可通过启用php_sqlite3.dll
才能使用此扩展。 php_sqlite3.dll
默认包含在PHP 5.3.0
之后的PHP发行版中。
有关详细的安装说明,请查看PHP教程及其官方网站。
连接到SQLite数据库
以下PHP代码显示如何连接到SQLite数据库。 如果数据库不存在,那么它将创建一个新的数据库,最后将返回一个数据库对象。
<?php
class SQLiteDB extends SQLite3 { function __construct() { $this->open('phpdb.db');
}
}
$db = new SQLiteDB(); if(!$db){ echo $db->lastErrorMsg();
} else { echo "Yes, Opened database successfully\n";
}?>
现在,运行上面的程序在当前目录中创建指定数据库:phpdb.db
。可以根据需要更改路径。 如果数据库成功创建,则会提供以下消息:
在执行上面语句后,应该也会在相同的目录下自动创建一个名称为:phpdb.db
的数据库文件。如下所示 -
创建表
以下PHP程序将用于在上面创建的数据库(phpdb.db
)中创建一个表:
<?phpclass SQLiteDB extends SQLite3{ function __construct() { $this->open('phpdb.db');
}
}
$db = new SQLiteDB();if(!$db){ echo $db->lastErrorMsg();
} else { echo "Yes, Opened database successfully<br/>\n";
}
$sql =<<<EOF CREATE TABLE company (ID INT PRIMARY KEY NOT NULL, NAME TEXT NOT NULL, AGE INT NOT NULL, ADDRESS CHAR(50), SALARY REAL); EOF;$ret = $db->exec($sql);if(!$ret){ echo $db->lastErrorMsg();
} else { echo "Yes, Table created successfully<br/>\n";
}
$db->close();
当执行上述程序时,它将在数据库(phpdb.db
)中创建一个名称为:company
的表,并显示以下消息:
插入数据操作
以下PHP程序显示了如何在上述示例中创建的company
表中插入数据记录:
<?phpclass SQLiteDB extends SQLite3{ function __construct() { $this->open('phpdb.db');
}
}
$db = new SQLiteDB();if(!$db){ echo $db->lastErrorMsg();
} else { echo "Yes, Opened database successfully<br/>\n";
}// 先删除后创建表$sql = "DROP table company";
$ret = $db->exec($sql);// 创建表语句$sql =<<<EOF CREATE TABLE if not exists company (ID INT PRIMARY KEY NOT NULL, NAME TEXT NOT NULL, AGE INT NOT NULL, ADDRESS CHAR(50), SALARY REAL); EOF;$ret = $db->exec($sql);if(!$ret){ echo $db->lastErrorMsg();
} else { echo "Yes, Table created successfully<br/>\n";
}// $db->close();$sql =<<<EOF INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (1, 'Maxsu', 26, 'Haikou', 20000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (2, 'Allen', 25, 'Guangzhou', 15000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (3, 'Tenny', 23, 'Shanghai', 20000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (4, 'Weiwang', 25, 'Beijing ', 65000.00 ); EOF;
$ret = $db->exec($sql); if(!$ret){ echo $db->lastErrorMsg();
} else { echo "Yes, Some Records has Inserted successfully<br/>\n";
}
$db->close();
当执行上述程序时,将向company
表中插入给定的记录,并显示如下:
SELECT操作
以下PHP程序显示了如何从上述示例中创建的company
表中获取并显示数据记录:
<?phpclass SQLiteDB extends SQLite3{ function __construct() { $this->open('phpdb.db');
}
}
$db = new SQLiteDB();if(!$db){ echo $db->lastErrorMsg();
} else { echo "Yes, Opened database successfully<br/>\n";
}// 先删除后创建表$sql = "DROP table company";
$ret = $db->exec($sql);// 创建表$sql =<<<EOF CREATE TABLE if not exists company (ID INT PRIMARY KEY NOT NULL, NAME TEXT NOT NULL, AGE INT NOT NULL, ADDRESS CHAR(50), SALARY REAL); EOF;$ret = $db->exec($sql);if(!$ret){ echo $db->lastErrorMsg();
} else { echo "Yes, Table created successfully<br/>\n";
}// $db->close();$sql =<<<EOF INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (1, 'Maxsu', 26, 'Haikou', 20000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (2, 'Allen', 25, 'Guangzhou', 15000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (3, 'Tenny', 23, 'Shanghai', 20000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (4, 'Weiwang', 25, 'Beijing ', 65000.00 ); EOF;$ret = $db->exec($sql);if(!$ret){ echo $db->lastErrorMsg();
} else { echo "Yes, Some Records has Inserted successfully<br/>\n";
}// 查询表中的数据echo "<b> Select Data from company table :</b><hr/>";
$sql =<<<EOF SELECT * from COMPANY; EOF;$ret = $db->query($sql);while($row = $ret->fetchArray(SQLITE3_ASSOC) ){ echo "ID = ". $row['ID'] . "<br/>\n"; echo "NAME = ". $row['NAME'] ."<br/>\n"; echo "ADDRESS = ". $row['ADDRESS'] ."<br/>\n"; echo "SALARY = ".$row['SALARY'] ."<br/>\n\n"; echo '----------------------------------<br/>';
}echo "Operation done successfully\n";
$db->close();
执行上述程序时,会产生以下结果:
更新操作
以下PHP代码显示了如何使用UPDATE
语句来更新记录,然后从company
表中获取并显示更新的记录:
<?phpclass SQLiteDB extends SQLite3{ function __construct() { $this->open('phpdb.db');
}
}
$db = new SQLiteDB();if(!$db){ echo $db->lastErrorMsg();
} else { echo "Yes, Opened database successfully<br/>\n";
}// 先删除后创建表$sql = "DROP table company";
$ret = $db->exec($sql);// 创建表$sql =<<<EOF CREATE TABLE if not exists company (ID INT PRIMARY KEY NOT NULL, NAME TEXT NOT NULL, AGE INT NOT NULL, ADDRESS CHAR(50), SALARY REAL); EOF;$ret = $db->exec($sql);if(!$ret){ echo $db->lastErrorMsg();
} else { echo "Yes, Table created successfully<br/>\n";
}// $db->close();$sql =<<<EOF INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (1, 'Maxsu', 26, 'Haikou', 20000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (2, 'Allen', 25, 'Guangzhou', 15000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (3, 'Tenny', 23, 'Shanghai', 20000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (4, 'Weiwang', 25, 'Beijing ', 65000.00 ); EOF;$ret = $db->exec($sql);if(!$ret){ echo $db->lastErrorMsg();
} else { echo "Yes, Some Records has Inserted successfully<br/>\n";
}// 更新ID=1的薪水为:29999$sql = 'UPDATE COMPANY set SALARY = 29999.00 where ID=1';
$ret = $db->exec($sql);if(!$ret){ echo $db->lastErrorMsg();
} else { echo $db->changes(), " Record(ID=1) updated successfully<br/>\n";
}// 查询表中的数据echo "<b> Select Data from company table :</b><hr/>";
$sql =<<<EOF SELECT * from COMPANY; EOF;$ret = $db->query($sql);while($row = $ret->fetchArray(SQLITE3_ASSOC) ){ echo "ID = ". $row['ID'] . "<br/>\n"; echo "NAME = ". $row['NAME'] ."<br/>\n"; echo "ADDRESS = ". $row['ADDRESS'] ."<br/>\n"; echo "SALARY = ".$row['SALARY'] ."<br/>\n\n"; echo '----------------------------------<br/>';
}echo "Operation done successfully\n";
$db->close();
执行上述程序时,会产生以下结果:
删除操作
以下PHP代码显示了如何使用DELETE
语句删除任何记录,然后从company
表中获取并显示剩余的记录:
<?phpclass SQLiteDB extends SQLite3{ function __construct() { $this->open('phpdb.db');
}
}
$db = new SQLiteDB();if(!$db){ echo $db->lastErrorMsg();
} else { echo "Yes, Opened database successfully<br/>\n";
}// 先删除后创建表$sql = "DROP table company";
$ret = $db->exec($sql);// 创建表$sql =<<<EOF CREATE TABLE if not exists company (ID INT PRIMARY KEY NOT NULL, NAME TEXT NOT NULL, AGE INT NOT NULL, ADDRESS CHAR(50), SALARY REAL); EOF;$ret = $db->exec($sql);if(!$ret){ echo $db->lastErrorMsg();
} else { echo "Yes, Table created successfully<br/>\n";
}// $db->close();$sql =<<<EOF INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (1, 'Maxsu', 26, 'Haikou', 20000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (2, 'Allen', 25, 'Guangzhou', 15000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (3, 'Tenny', 23, 'Shanghai', 20000.00 ); INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY) VALUES (4, 'Weiwang', 25, 'Beijing ', 65000.00 ); EOF;$ret = $db->exec($sql);if(!$ret){ echo $db->lastErrorMsg();
} else { echo "Yes, Some Records has Inserted successfully<br/>\n";
}// 更新ID小于等于2的数据记录$sql =<<<EOF DELETE from COMPANY where ID<=2; EOF;$ret = $db->exec($sql);if(!$ret){ echo $db->lastErrorMsg();
} else { echo $db->changes(), " Record(ID<=2) deleted successfully<br/>\n";
}// 查询表中的数据echo "<b> Select Data from company table :</b><hr/>";
$sql =<<<EOF SELECT * from COMPANY; EOF;$ret = $db->query($sql);while($row = $ret->fetchArray(SQLITE3_ASSOC) ){ echo "ID = ". $row['ID'] . "<br/>\n"; echo "NAME = ". $row['NAME'] ."<br/>\n"; echo "ADDRESS = ". $row['ADDRESS'] ."<br/>\n"; echo "SALARY = ".$row['SALARY'] ."<br/>\n\n"; echo '----------------------------------<br/>';
}echo "Operation done successfully\n";
$db->close();
执行上述程序时,会产生以下结果:
由于其它操作都类似,只需写上对应SQL语句,然后使用PHP执行即可,所以其它的示例在这里就不再一一演示了。如有疑问,可以留言联系。
更多SQLite教程,请阅读:http://www.yiibai.com/sqlite/
以上是关于如何安装php7 sqlite3的主要内容,如果未能解决你的问题,请参考以下文章
centos7 安装php7 Centos7如何安装PHP7最新版
如何在运行 Node.js 的 Debian 上安装 sqlite3?