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HomeBackend DevelopmentPHP TutorialShare a self-written PHP class for operating mysql database

This is a class I wrote myself. Everyone is welcome to discuss and guide. Some usage methods:
//Declare database objects
$Conn = new Mysql;
//Load database parameters
$Conn->Parameter (database server, database user name , database password, database name, database encoding, database table prefix [can be empty]);

The above code has already loaded this class file and initialized some database connection parameters!
The following are some basic method functions:
1. $Conn -> Table();
Select the data table, the parameter is the name of the data table
2. $Conn -> Field();
Select the field name, multiple Separate with commas, if this method is not called, all will be returned
3. $Conn -> Where();
Sql Where sub-statement, filter based on conditions
4. $Conn -> Order();
Sql sorting
5 , $Conn -> Page (int);
The parameter is a positive integer number. If this method is called, the records will be displayed in pages
6. $Conn -> Select (Boolean value);
Execute the query and return the query results, if any , it is a two-dimensional array. If none, it returns false. The parameter can be omitted. If omitted, the default is true. The returned array contains numeric elements
7, $Conn -> Del();
Delete records
8, $ Conn -> Edit(array());
Modify the record, the parameter is a one-dimensional array, the array key is the field name, and the array value is the field value
9. $Conn -> Into(array());
Add the record, The parameter is a one-dimensional array, the array key is the field name, and the array value is the field value.

The above methods can be called continuously, for example:

$Rult = $Conn -> Table('user') -> Select(); //The query returns all records of the user table
$Rult = $Conn -> Table( 'user') -> Page(20) -> Select();//The query returns all records in the user table and displays them in pages, 20 records per page;

There are also many method calls and tricks, which I will explain in detail later when I have time!
  1. /*
  2. Database operation class
  3. Operation method: Facing objects
  4. Production time: 2013-3-10
  5. Current version: BqhMysql(mysqli)1.0.1
  6. Software author: Sad Song
  7. Contact QQ: 36975
  8. Contact number: 18907975647
  9. Email: admin@q128.com
  10. Contact address: Xiaosong Town, Shicheng County, Ganzhou City, Jiangxi Province
  11. Postal code: 342706
  12. */
  13. class Mysql{
  14. private $LocalHost = ' localhost';
  15. private $LoaclUser = 'root';
  16. private $LocalPass = '123456';
  17. private $LocalBase = 'jiangxibaiyi';
  18. private $LocalCode = 'UTF8';
  19. private $PreFix;
  20. private $Conn;
  21. private $Start = 0;
  22. private $Error = false; //Database connection status, false means not connected or the connection is abnormal
  23. public $Err = true; //Sql execution result
  24. private $Table;
  25. private $Field = '*';
  26. private $Where = '';
  27. private $Order = '';
  28. private $PageSize = 0; //Page display->How many items per page, 0 means no paging display
  29. private $PageCount = 1; //Paging display->How many items are there in total
  30. private $PageNum = 1; //Paging display->How many pages are there in total
  31. private $PageNo = 1; //Paging display->What is the current page
  32. private $PageKey = 'page'; //Page url parameter key
  33. private $PageStart = 0; //Page display->The current item to return from
  34. private $Select;
  35. private $Rest;
  36. private $Result = false;//Result set
  37. public $FormArray = array();
  38. public $Instr_ID = 0;
  39. private $j = 0;
  40. public function Parameter($Loca, $Root, $Pass, $Base, $Code, $PreFix = ''){
  41. $this->LoaclUser = $Root;
  42. $this->LocalBase = $Base;
  43. $this->LocalCode = $Code;
  44. $this- >LocalHost = $Loca;
  45. $this->LocalPass = $Pass;
  46. $this->PreFix = $PreFix;
  47. return $this;
  48. }
  49. private function Connection( $Sql ){
  50. !function_exists(mysqli_connect ) ? die('Query failed, unable to load mysqli extension') : null;
  51. $this->Conn = @new mysqli( $this->LocalHost, $this->LoaclUser, $this->LocalPass, $this->LocalBase);
  52. $this->Error = mysqli_connect_errno() == 0 ? true : false;
  53. !$this->Error ? die('Database connection error, please check the database connection parameters') : null;
  54. $this->Conn->query('SET NAMES ' . $this->LocalCode);
  55. $this->Rest = $this->Conn->query($Sql) ;
  56. $this->Err = mysqli_error($this->Conn);
  57. $this->Instr_ID = mysqli_insert_id($this->Conn);
  58. $this->Rest->free_result;
  59. $this->Conn->close;
  60. $this -> FormArray = '';
  61. return $this;
  62. }
  63. public function null(){
  64. $this->PageSize = 0;
  65. // $this->PageCount = 1;
  66. $this->PageStart = 1;
  67. $this->Field = ' * ';
  68. $this->Select = '';
  69. unset($this-> Table, $this->Where,$this->Order, $this->Result);
  70. }
  71. public function Table( $TableName ) {//Data table
  72. $this -> null();
  73. $this->Table = '`' . $this->PreFix . $TableName . '`';
  74. return $this;
  75. }
  76. public function Field( $Array = '*' ) {//data Field
  77. !empty( $this->Field ) ? $this->Field = '' : null;
  78. $Array = explode(',', $Array);
  79. foreach ( $Array as $field ) {
  80. $this->Field .= !$this->Start ? '`' . $field . '`' : ', `' . $field . '`';
  81. $this->Start++;
  82. }
  83. $this->Start = 0;
  84. return $this;
  85. }
  86. public function Where( $Where ) {//Condition
  87. $this->Where = ' where ' .$Where;
  88. return $this;
  89. }
  90. public function Order( $Order ) {//Sort
  91. $this->Order = ' order by ' . $Order;
  92. return $this;
  93. }
  94. public function pk( $key ) {//Paging url parameter key
  95. $this->PageKey = $key;
  96. return $this;
  97. }
  98. public function Page( $PageSize ) {//Paging
  99. $this->PageSize = $PageSize;
  100. $this-> ;PageNo = $this->get( $this->PageKey );
  101. $this->PageNo = empty( $this->PageNo ) || !isset( $this->PageNo ) || ! is_numeric( $this->PageNo ) || $this->PageNo PageNo;
  102. return $this;
  103. }
  104. public function post( $Key, $Filter = true ){
  105. return $Filter ? strip_tags($_POST[$Key]) : $_POST[$Key];
  106. }
  107. public function get( $Key, $Filter = true ){
  108. return $Filter ? strip_tags($_GET [$Key]) : $_GET[$Key];
  109. }
  110. public function Sel(){
  111. $this->Select = 'Select ' . $this->Field . ' from ' . $this->Table . $this->Where . $this->Order;
  112. $this->Connection( $this->Select );
  113. if ( $this->Rest->num_rows ) {
  114. while ( $Rs = $this->Rest->fetch_assoc() ) {
  115. $this->Result[] = $Rs;
  116. }
  117. }
  118. $DataBase = $this->Result;
  119. return empty($DataBase) ? false : $DataBase;
  120. }
  121. public function querys( $Sql = '', $Type = 'not', $biao = false ) {
  122. $this->Select = $Sql;
  123. $this->Connection( $this->Select );
  124. if ( $this->Rest->num_rows ) {
  125. if ( !$biao ) {
  126. while ( $Rs = $this->Rest->fetch_array() ) {
  127. $this->Result[] = !preg_match('/^d+$/i', $Type) ? $Rs : $Rs[ $Type ];
  128. }
  129. } else {
  130. while ( $Rs = $this->Rest->fetch_assoc() ) {
  131. $this->Result[] = $Rs;
  132. }
  133. }
  134. }
  135. $DataBase = $this->Result;
  136. return empty($DataBase) ? false : $DataBase;
  137. }
  138. public function executes( $Sql = '' ){
  139. $this->Connection( $Sql );
  140. return $this->Rest;
  141. }
  142. public function exists( $T = '', $F = '', $W = ''){
  143. if ( empty( $F ) ) { return 0; }
  144. $cmd = empty( $W ) ? 'Select sum(' . $F . ') as `baiyinum` from `' . $this->PreFix . $T .'`' : 'Select sum(' . $F . ') as `baiyinum` from `' . $this->PreFix . $T .'` Where ' . $W;
  145. $this->Connection( $cmd );
  146. unset( $T, $F, $W, $cmd );
  147. $Rel = $this->Rest->fetch_array();
  148. return round( $Rel['baiyinum'], 2 );
  149. }
  150. public function ExistsTo( $Bili = 10000, $T = '', $F = '', $W = ''){
  151. if ( empty( $F ) ) { return 0; }
  152. $cmd = empty( $W ) ? 'Select sum(' . $F . ') as `baiyinum` from `' . $this->PreFix . $T .'`' : 'Select sum(' . $F . ') as `baiyinum` from `' . $this->PreFix . $T .'` Where ' . $W;
  153. $this->Connection( $cmd );
  154. unset( $T, $F, $W, $cmd );
  155. $Rel = $this->Rest->fetch_array();
  156. return round( $Rel['baiyinum'] * $Bili );
  157. }
  158. public function Select( $Type = true, $ListNum = 1 ){ //返回记录(数组形式, 返回条数)
  159. $this->Select = 'Select ' . $this->Field . ' from ' . $this->Table . $this->Where . $this->Order;
  160. if ( is_numeric( $ListNum ) ) {
  161. if ( $this->PageSize > 0 ) {
  162. $this->Connection( $this->Select );//执行查询
  163. $this->PageCount = $this->Rest->num_rows;//取得记录总数
  164. $this->PageNum = ceil($this->PageCount / $this->PageSize); //总共有多少页
  165. $this->PageNo = $this->PageNo > $this->PageNum ? $this->PageNum : $this->PageNo;
  166. $this->PageStart = ( $this->PageNo - 1 ) * $this->PageSize; //当前从第几条开始返回
  167. $this->Select .= ' limit ' . $this->PageStart . ', ' .$this->PageSize; //重新构造sql语句
  168. } else {
  169. $this->Select .= ' limit ' . $ListNum; //重新构造sql语句
  170. }
  171. } else {
  172. $this->Select .= ' limit 1'; //重新构造sql语句
  173. }
  174. //echo $this->Select;
  175. $this->Connection( $this->Select );//再次执行查询
  176. if ( $this->Rest->num_rows ) {//如果记录存在
  177. if ( $Type ) {
  178. while ( $Rs = $this->Rest->fetch_array() ) {
  179. $this->Result[] = $Rs;
  180. }
  181. }else{
  182. while ( $Rs = $this->Rest->fetch_assoc() ) {
  183. $this->Result[] = $Rs;
  184. }
  185. }
  186. }
  187. if ( ( $ListNum == 1 or !is_numeric( $ListNum ) ) && !$this->PageSize) { $this->Result = $this->Result[0]; }
  188. $DataBase = $this->Result;
  189. return empty($DataBase) ? false : $DataBase;
  190. }
  191. public function Num() { //返回记录总数
  192. $this->Select = 'Select ' . $this->Field . ' from ' . $this->Table . $this->Where . $this->Order;
  193. $this->Connection( $this->Select );//执行查询
  194. return $this->Rest->num_rows;//取得记录总数
  195. }
  196. public function PageNav($NumNav = false ) { //分页
  197. $Action = $this -> get('action');
  198. !empty( $Action ) or $Action = 'index';
  199. $Module = $this -> get('module');
  200. !empty( $Module ) or $Module = 'index';
  201. $NavUrl = '/' . $Module . '/' . $Action . '/' . $this -> PageKey .'/';
  202. $NaIndex = '/' . $Module . '/' . $Action;
  203. $PageHtml = "\n
    ";
  204. $PageHtml .= '' . $this->PageCount . '条记录 ' . $this->PageNo . '/' . $this->PageNum . '页 ';
  205. $this->PageNo 首页\nPageNo - 1) . "\">上一页\n";
  206. if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }
  207. $this->PageNo >= $this->PageNum or $PageHtml .= "PageNo + 1) . "\">下一页\nPageNum . "\">尾页\n";
  208. $PageHtml .= "
\n";
  • return $PageHtml;
  • }
  • private function NumPage( $Can = '' ) { //数字分页
  • $NumHtml = '';
  • $First = 1;
  • $Last = $this->PageNum;
  • if ( $this->PageNum > 5 ) {
  • if ( $this->PageNo PageNum ) {
  • $First = $this->PageNo - 2;
  • $Last = $this->PageNo + 2;
  • }else{
  • $First = $this->PageNo - 4;
  • $Last = $this->PageNum;
  • }
  • }
  • if ( $First if ( $Last > $this->PageNum ) { $First = $this->PageNum - 4; $Last = $this->PageNum;}
  • for( $i = $First; $i $NumHtml .= $this->PageNo != $i ? "\n\t" . '' . $i . '' . "\n\t" : "\n\t" .'' . $i . '' . "\n\t";
  • }
  • unset($Can, $First, $i, $Last);
  • return $NumHtml;
  • }
  • public function UserPage($NumNav = false, $PageName = 'index', $Mulu = 'user' ) { //会员中心分页
  • $NavUrl = '/' . $Mulu . '/' . $PageName . '/' . $this->PageKey . '/';
  • $PageHtml = "\n
    ";
  • $PageHtml .= '' . $this->PageCount . '条记录 ' . $this->PageNo . '/' . $this->PageNum . '页 ';
  • $this->PageNo 首页\nPageNo - 1) . "\">上一页\n";
  • if ( $NumNav ) { $PageHtml .= $this->NumPage($NavUrl); }
  • $this->PageNo >= $this->PageNum or $PageHtml .= "PageNo + 1) . "\">下一页\nPageNum . "\">尾页\n";
  • $PageHtml .= "
  • n";
  • return $PageHtml;
  • }
  • // Form processing begins
  • // Submit when judging form
  • public function FormIs( $Keys = 'mm' ) {
  • return $_POST[ $Keys ] == 1 ? true : false;
  • }
  • //Get data via post
  • public function _post( $Keys = '', $TiHuan = '') {
  • $Values ​​= strip_tags( $_POST[ $Keys ] );
  • $ this->FormArray[$Keys] = empty( $Values ​​) ? $TiHuan : $Values;
  • return empty( $Values ​​) ? $TiHuan : $Values;
  • }
  • //get method to get data
  • public function _get ( $Keys = '', $TiHuan = '') {
  • $Values ​​= strip_tags( $_GET[ $Keys ] );
  • return empty( $Values ​​) ? $TiHuan : $Values;
  • }
  • //Judge whether Is a number and not less than 0
  • public function IsNum( $Num = 0, $Mesg = 'Parameter must be a number' ) {
  • if ( is_numeric( $Num ) && !empty( $Num ) && $Num >= 0 ) {
  • return $Num;
  • }else{
  • die( $Mesg );
  • }
  • }
  • //Determine whether it is a number and not less than 0 and return True/False
  • public function NumBer( $Num = 0) {
  • return is_numeric( $Num ) && !empty( $Num ) && $Num >= 0 ? true : false;
  • }
  • //Detect that relevant data seems to exist
  • public function IsData($Types = true, $memg = 'data Already exists' ){
  • $this->Connection('select ' . $this->Field . ' from ' . $this->Table . $this->Where);
  • if ( $Types ){
  • $this->Rest->num_rows > 0 ? die( $memg ) : null;
  • } else {
  • return $this->Rest->num_rows;
  • }
  • }
  • //Write Into database records
  • public function into( $Mesg = '' ){
  • !is_array( $this->FormArray ) ? die( $Mesg ) : null;
  • $Sql = 'insert into ' . $this->Table . ' (`';
  • $I = 0;
  • foreach ( $this->FormArray as $Key => $Val ){
  • $Duan .= !$I ? $Key . '`' : ', ` ' . $Key . '`';
  • if ( is_numeric( $Val ) ){
  • $Vals .= !$I ? $Val : ', ' . $Val;
  • }else{
  • $Vals .= !$I ? ''' . $Val . ''' : ', '' . $Val . ''';
  • }
  • $I++;
  • }
  • $Sql .= $Duan . ') values ​​(' . $Vals . ' )';
  • //@file_put_contents('1.sql', $Sql, FILE_APPEND);
  • $this->Connection( $Sql );
  • return !empty( $this->Err ) ? false : true;
  • }
  • //Write data in array form
  • public function MsgBox( $Table = '', $Filed = array() ) {
  • $this -> Table($Table);
  • foreach( $Filed as $Key => $Val ) {
  • $this -> FormArray[ $Key ] = $Val;
  • }
  • return $this -> Into('No data obtained');
  • }
  • //Modify the database Record
  • public function Edit( $Array = array() ) {
  • if ( empty( $Array ) ) { $Array = $this -> FormArray; }
  • if ( !is_array( $Array ) || empty( $Array ) ) {
  • return false;
  • } else {
  • $Sql = 'update ' . $this -> Table . ' set ';
  • $I = 0;
  • $Sub = '';
  • $Huan = array(' -' => '[jian]', '+' => '[jia]', '*' => '[cheng]', '/' => '[chu]');
  • $ Zhan = array('[jian]' => '-', '[jia]' => '+', '[cheng]' => '*', '[chu]' => '/ ');
  • foreach ( $Array as $Files => $Val ) {
  • $Val = !is_numeric( $Val ) && !preg_match('/`w+`s*(+|-|*|/)/ i', $Val) ? ''' . $Val . ''' : $Val;
  • foreach ( $Huan as $key => $val ){
  • $Val = str_replace($key, $val, $Val );
  • }
  • $duan = !$I ? '`' . $Files . '` = ' : ', `' . $Files . '` = ';
  • $Sub .= $duan . $Val;
  • $ I++;
  • }
  • $Sql .= $Sub . $this -> Where;
  • foreach ( $Zhan as $Fan => $Hui ) {
  • $Sql = str_replace($Fan, $Hui, $Sql);
  • }
  • //echo $Sql; die;
  • $this -> Connection( $Sql );
  • unset( $Array, $duan, $Fan, $Files, $Huan, $Hui, $I, $ key, $Sql, $Sub, $Val, $Zhan, $val );
  • return !empty( $this -> Err ) ? false : true;
  • }
  • }
  • //Delete database records
  • public function del (){
  • $Sql = 'delete from ' . $this->Table . $this->Where;
  • $this->Connection( $Sql );
  • unset($Sql);
  • return !empty( $this->Err ) ? false : true;
  • }
  • //Form processing ends
  • //Page jump
  • public function Msg( $Text = 'Operation successful' ) {
  • echo '';
  • echo '';
  • exit;
  • }
  • #Get the current system time
  • public function Times(){
  • return str_replace('-', '[jian]', date('Y-m-d H:i:s'));
  • }
  • #取得用户IP地址
  • public function GetIP(){
  • if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown"))
  • $ip = getenv("HTTP_CLIENT_IP");
  • else if (getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown"))
  • $ip = getenv("HTTP_X_FORWARDED_FOR");
  • else if (getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown"))
  • $ip = getenv("REMOTE_ADDR");
  • else if (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown"))
  • $ip = $_SERVER['REMOTE_ADDR'];
  • else
  • $ip = "unknown";
  • return($ip);
  • }
  • //最后关闭数据库连接
  • public function Close(){
  • !is_object( $this -> Conn ) or mysqli_close( $this -> Conn );
  • }
  • }
  • 复制代码


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