SQLite3 version

SQLite3/Db.php

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+<?php
+
+/**
+ * Database wrapper for SQLite3
+ */
+class Db {
+    // Database connection
+    protected static $connection;
+
+    /**
+     * Connect to the database
+     * 
+     * @return bool False on failure / SQLite3 object instance on success
+     */
+    public function connect() {
+        // Check if connection is already set
+        if( isset( self::$connection ) ) {
+            return self::$connection;
+        }
+
+        // Check if last connect failed
+        if( self::$connection === false ) {
+            return false;
+        }
+
+        // Start connecting
+        try {
+            $config = parse_ini_file( './config.ini' );
+            $perm = SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE;
+            self::$connection = new SQLite3( $config['database'] , $perm , $config['encryption'] );
+        } catch ( Exception $e ) {
+            var_dump( $e );
+            return false;
+        }
+        return self::$connection;
+    }
+
+    /**
+     * Query the database
+     *
+     * @param $query The query string
+     * @result bool False on failure / mixed The result of the SQLite3::query() function
+     */
+    public function query( $query ) {
+        // Get connection
+        $connection = $this -> connect();
+
+        // Check if valid connection
+        if( $connection === false ) {
+            return false;
+        }
+
+        // Query the database
+        $result = $connection -> query( $query );
+
+        return $result;
+    }
+
+	/**
+	 * Fetch rows from the database (SELECT query)
+	 *
+	 * @param $query The query string
+	 * @return bool False on failure / array Database rows on success
+	 */
+    public function select( $query ) {
+        $rows = array();
+        $result = $this -> query( $query );
+
+        if( $result === false ) {
+            return false;
+        }
+
+        while( $row = $result -> fetchArray() ) {
+            $rows[] = $row;
+        }
+
+        return $rows;
+    }
+
+	/**
+	 * Fetch the last error from the database
+	 * 
+	 * @return string Database error message
+	 */
+    public function error() {
+        $connection = $this -> connect();
+        return $connection -> lastErrorMsg();
+    }
+
+	/**
+	 * Quote and escape value for use in a database query
+	 *
+	 * @param string $value The value to be quoted and escaped
+	 * @return string The quoted and escaped string
+	 */
+    public function quote( $value ) {
+        $connection = $this -> connect();
+        $escaped = $connection -> escapeString( $value );
+        return "'" . $escaped . "'";
+    }
+}

SQLite3/README.md

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+This is a SQLite3 version of the original MySQL database tutorial. 
+
+The usage should be mostly the same

SQLite3/config.ini

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+[database]
+database = test
+encryption = thisisapassword

SQLite3/db_functions.php

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+<?php
+/**
+ * Connect to the database
+ * 
+ * @return bool false on failure / mysqli MySQLi object instance on success
+ */
+function db_connect() {
+    // Define the connection as static variable
+    static $connection;
+
+    // Check if connection is already set
+    if( isset( $connection ) ) {
+        return $connection;
+    }
+
+    // Check if last connect failed
+    if( $connection === false ) {
+        return false;
+    }
+
+    // Start connecting
+    try {
+        $config = parse_ini_file( './config.ini' );
+        $perm = SQLITE3_OPEN_READWRITE | SQLITE3_OPEN_CREATE;
+        $connection = new SQLite3( $config['database'] , $perm , $config['encryption'] );
+    } catch ( Exception $e ) {
+        var_dump( $e );
+        return false;
+    }
+    return $connection;
+}
+
+/**
+ * Query the database
+ *
+ * @param $query The query string
+ * @return mixed The result of the mysqli::query() function
+ */
+function db_query( $query ) {
+    // Get connection
+    $connection = db_connect();
+
+    // Check if valid connection
+    if( $connection === false ) {
+        return false;
+    }
+
+    // Query the database
+    $result = $connection -> query( $query );
+
+    return $result;
+}
+
+/**
+ * Fetch rows from the database (SELECT query)
+ *
+ * @param $query The query string
+ * @return bool False on failure / array Database rows on success
+ */
+function db_select($query) {
+    $rows = array();
+    $result = db_query( $query );
+
+    if( $result === false ) {
+        return false;
+    }
+
+    while( $row = $result -> fetchArray() ) {
+        $rows[] = $row;
+    }
+
+    return $rows;
+}
+
+/**
+ * Fetch the last error from the database
+ * 
+ * @return string Database error message
+ */
+function db_error() {
+    $connection = db_connect();
+    return $connection -> lastErrorMsg();
+}
+
+/**
+ * Quote and escape value for use in a database query
+ *
+ * @param string $value The value to be quoted and escaped
+ * @return string The quoted and escaped string
+ */
+function db_quote( $value ) {
+    $connection = db_connect();
+    $escaped = $connection -> escapeString( $value );
+    return "'" . $escaped . "'";
+}