insert/update Functions calls draft

Added count variable which stores returned rows count

Some readme improvements

Allow to pass bind variables for func()

More real example of func

MysqliDb.php

@@ -68,6 +68,12 @@ class MysqliDb
      * @var array
      */
     protected $_bindParams = array(''); // Create the empty 0 index
+    /**
+     * Variable which holds an amount of returned rows during get/getOne/select queries
+     *
+     * @var string
+     */ 
+    public $count = 0;
 
     /**
      * @param string $host
@@ -118,6 +124,7 @@ class MysqliDb
         $this->_query = null;
         $this->_whereTypeList = null;
         $this->_paramTypeList = null;
+        $this->count = 0;
     }
 
     /**
@@ -422,11 +429,25 @@ class MysqliDb
                 $pos = strpos($this->_query, 'UPDATE');
                 if ($pos !== false) {
                     foreach ($tableData as $prop => $value) {
-                        // determines what data type the item is, for binding purposes.
-                        $this->_paramTypeList .= $this->_determineType($value);
+                        if (is_array($value)) {
+                            $this->_query .= $prop ." = ";
+                            if (!empty($value['[I]']))
+                                $this->_query .= $prop . $value['[I]'] . ", ";
+                            else {
+                                $this->_query .= $value['[F]'][0] . ", ";
+                                if (is_array ($value['[F]'][1])) {
+                                    foreach ($value['[F]'][1] as $key => $val) {
+                                        $this->_paramTypeList .= $this->_determineType($val);
+                                    }
+                                }
+                            }
+                        } else {
+                            // determines what data type the item is, for binding purposes.
+                            $this->_paramTypeList .= $this->_determineType($value);
 
-                        // prepares the reset of the SQL query.
-                        $this->_query .= ($prop . ' = ?, ');
+                            // prepares the reset of the SQL query.
+                            $this->_query .= ($prop . ' = ?, ');
+                        }
                     }
                     $this->_query = rtrim($this->_query, ', ');
                 }
@@ -498,19 +519,28 @@ class MysqliDb
                 //is insert statement
                 $keys = array_keys($tableData);
                 $values = array_values($tableData);
-                $num = count($keys);
 
-                // wrap values in quotes
+                $this->_query .= '(' . implode($keys, ', ') . ')';
+                $this->_query .= ' VALUES(';
+                // wrap values in quotes if needed
                 foreach ($values as $key => $val) {
+                    if (is_array($val)) {
+                        if (!empty($val['[I]']))
+                            $this->_query .= $keys[$key].$val['[I]'].", ";
+                        else {
+                            $this->_query .= $val['[F]'][0].", ";
+                            if (is_array ($val['[F]'][1])) {
+                                foreach ($val['[F]'][1] as $key => $value) {
+                                    $this->_paramTypeList .= $this->_determineType($value);
+                                }
+                            }
+                        }
+                        continue;
+                    }
+
                     $values[$key] = "'{$val}'";
                     $this->_paramTypeList .= $this->_determineType($val);
-                }
-
-                $this->_query .= '(' . implode($keys, ', ') . ')';
-                $this->_query .= ' VALUES(';
-                while ($num !== 0) {
                     $this->_query .= '?, ';
-                    $num--;
                 }
                 $this->_query = rtrim($this->_query, ', ');
                 $this->_query .= ')';
@@ -529,7 +559,15 @@ class MysqliDb
         if ($hasTableData) {
             $this->_bindParams[0] = $this->_paramTypeList;
             foreach ($tableData as $prop => $val) {
-                array_push($this->_bindParams, $tableData[$prop]);
+                if (!is_array($tableData[$prop])) {
+                    array_push($this->_bindParams, $tableData[$prop]);
+                    continue;
+                }
+
+                if (is_array($tableData[$prop]['[F]'][1])) {
+                    foreach ($tableData[$prop]['[F]'][1] as $val)
+                        array_push($this->_bindParams, $val);
+                }
             }
         }
         // Prepare where condition bind parameters
@@ -600,6 +638,8 @@ class MysqliDb
             }
             array_push($results, $x);
         }
+        $this->count = $stmt->num_rows;
+
         return $results;
     }
 
@@ -652,4 +692,72 @@ class MysqliDb
         return $this->_mysqli->error;
     }
 
+    /* Helper functions */
+    /**
+     * Method returns generated interval function as a string
+     *
+     * @param string interval in the formats:
+     *        "1", "-1d" or "- 1 day" -- For interval - 1 day
+     *        Supported intervals [s]econd, [m]inute, [h]hour, [d]day, [M]onth, [Y]ear
+     *        Default null;
+     * @param string Initial date
+     *
+     * @return string
+    */
+    public function interval ($diff, $func = "NOW()") {
+        $types = Array ("s" => "second", "m" => "minute", "h" => "hour", "d" => "day", "M" => "month", "Y" => "year");
+        $incr = '+';
+        $items = '';
+        $type = 'd';
+
+        if ($diff && preg_match('/([+-]?) ?([0-9]+) ?([a-zA-Z]?)/',$diff, $matches)) {
+            if (!empty ($matches[1])) $incr = $matches[1];
+            if (!empty ($matches[2])) $items = $matches[2];
+            if (!empty ($matches[3])) $type = $matches[3];
+            if (!in_array($type, array_keys($types)))
+                trigger_error ("invalid interval type in '{$diff}'");
+            $func .= " ".$incr ." interval ". $items ." ".$types[$type] . " ";
+        }
+        return $func;
+
+    }
+    /**
+     * Method returns generated interval function as an insert/update function
+     *
+     * @param string interval in the formats:
+     *        "1", "-1d" or "- 1 day" -- For interval - 1 day
+     *        Supported intervals [s]econd, [m]inute, [h]hour, [d]day, [M]onth, [Y]ear
+     *        Default null;
+     * @param string Initial date
+     *
+     * @return array
+    */
+    public function now ($diff = null, $func = "NOW()") {
+        return Array ("[F]" => Array($this->interval($diff, $func)));
+    }
+
+    /**
+     * Method generates incremental function call
+     * @param int increment amount. 1 by default
+     */
+    public function inc($num = 1) {
+        return Array ("[I]" => "+" . (int)$num);
+    }
+
+    /**
+     * Method generates decrimental function call
+     * @param int increment amount. 1 by default
+     */
+    public function dec ($num = 1) {
+        return Array ("[I]" => "-" . (int)$num);
+    }
+
+    /**
+     * Method generates user defined function call
+     * @param string user function body
+     */
+    public function func ($expr, $bindParams = null) {
+        return Array ("[F]" => Array($expr, $bindParams));
+    }
+
 } // END class

readme.md

@@ -13,12 +13,30 @@ $db = new Mysqlidb('host', 'username', 'password', 'databaseName');
 Next, prepare your data, and call the necessary methods. 
 
 ### Insert Query
+Simple example
+```php
+$data = Array ("login" => "admin",
+               "firstName" => "John",
+               "lastName" => 'Doe'
+)
+$id = $db->insert('users', $data)
+if($id)
+    echo 'user was created. Id='.$id;
+```
 
+Insert with functions use
 ```php
-$data = array(
+$data = Array(
 	'login' => 'admin',
 	'firstName' => 'John',
 	'lastName' => 'Doe',
+	'password' => $db->func('SHA1(?)',Array ("secretpassword+salt")),
+	// password = SHA1('secretpassword+salt')
+	'createdAt' => $db->now(),
+	// createdAt = NOW()
+	'expires' => $db->now('+1Y')
+	// expires = NOW() + interval 1 year
+	// Supported intervals [s]econd, [m]inute, [h]hour, [d]day, [M]onth, [Y]ear
 );
 
 $id = $db->insert('users', $data)
@@ -26,11 +44,24 @@ if($id)
     echo 'user was created. Id='.$id;
 ```
 
-### Select Query
+### Update Query
+```php
+$data = Array (
+	'firstName' => 'Bobby',
+	'lastName' => 'Tables',
+	'editCount' => $db->inc(2)
+	// editCount = editCount + 2;
+);
+$db->where('id', 1);
+if($db->update('users', $data)) echo 'successfully updated'; 
+```
 
+### Select Query
+After any select/get function calls amount or returned rows
+is stored in $count variable
 ```php
-$users = $db->get('users'); //contains an array of all users 
-$users = $db->get('users', 10); //contains an array 10 users
+$users = $db->get('users'); //contains an Array of all users 
+$users = $db->get('users', 10); //contains an Array 10 users
 ```
 
 or select with custom columns set. Functions also could be used
@@ -41,9 +72,10 @@ echo "total ".$stats['cnt']. "users found";
 
 $cols = Array ("id, name, email");
 $users = $db->get ("users", null, $cols);
-foreach ($users as $user) { 
-    print_r ($user);
-}
+if ($db->count > 0)
+    foreach ($users as $user) { 
+        print_r ($user);
+    }
 ```
 
 or select just one row
@@ -54,16 +86,6 @@ $user = $db->getOne ("users");
 echo $user['id'];
 ```
 
-### Update Query
-```php
-$data = array (
-	'firstName' => 'Bobby',
-	'lastName' => 'Tables'
-);
-$db->where('id', 1);
-if($db->update('users', $data)) echo 'successfully updated'; 
-```
-
 ### Delete Query
 ```php
 $db->where('id', 1);
@@ -80,14 +102,14 @@ foreach ($users as $user) {
 
 ### Raw Query Method
 ```php
-$params = array(1, 'admin');
+$params = Array(1, 'admin');
 $users = $db->rawQuery("SELECT id, firstName, lastName FROM users WHERE id = ? AND login = ?", $params);
-print_r($users); // contains array of returned rows
+print_r($users); // contains Array of returned rows
 
 // will handle any SQL query
-$params = array(10, 1, 10, 11, 2, 10);
+$params = Array(10, 1, 10, 11, 2, 10);
 $resutls = $db->rawQuery("(SELECT a FROM t1 WHERE a = ? AND B = ? ORDER BY a LIMIT ?) UNION(SELECT a FROM t2 WHERE a = ? AND B = ? ORDER BY a LIMIT ?)", $params);
-print_r($results); // contains array of returned rows
+print_r($results); // contains Array of returned rows
 ```
 
 
@@ -104,21 +126,21 @@ $results = $db->get('users');
 
 Custom Operators:
 ```php
-$db->where('id', array('>=' => 50));
+$db->where('id', Array('>=' => 50));
 $results = $db->get('users');
 // Gives: SELECT * FROM users WHERE id >= 50;
 ```
 
 BETWEEN:
 ```php
-$db->where('id', array('between' => array(4, 20) ) );
+$db->where('id', Array('between' => Array(4, 20) ) );
 $results = $db->get('users');
 // Gives: SELECT * FROM users WHERE id BETWEEN 4 AND 20
 ```
 
 IN:
 ```php
-$db->where('id', array( 'in' => array(1, 5, 27, -1, 'd') ) );
+$db->where('id', Array( 'in' => Array(1, 5, 27, -1, 'd') ) );
 $results = $db->get('users');
 // Gives: SELECT * FROM users WHERE id IN (1, 5, 27, -1, 'd');
 ```