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Share a self-written php class for mysql database operations

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Share a self-written php class for mysql database operations
This is a Class I wrote by myself. You are welcome to discuss and guide it.
Some usage methods:
// Declare the database object
$ Conn = new Mysql;
// Load database parameters
$ Conn-> Parameter (database server, database username, database password, database name, database code, database table prefix [can be blank]);

The above code has loaded this class file and initialized some database connection parameters!
The following describes several basic methods and functions:
1. $ Conn-> Table ();
Select a data table. the parameter is the data table name.
2. $ Conn-> Field ();
Names of the selected fields separated by commas (,). if this method is not called, all fields are returned.
3. $ Conn-> Where ();
SQL Where substatement, filtering by conditions
4. $ Conn-> Order ();
SQL sorting
5. $ Conn-> Page (int );
The parameter is a positive integer. if you call this method, the record is displayed on pages.
6. $ Conn-> Select (Boolean );
Execute the query and return the query result. If yes, it is a two-dimensional array. If no, it returns false. the parameter can be omitted. if omitted, it is true by default. the returned array contains numeric elements.
7. $ Conn-> Del ();
Delete record
8. $ Conn-> Edit (array ());
Modify 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 record. the parameter is a one-dimensional array, the array key is the field name, and the array value is the field value.

The preceding methods can be called consecutively, for example:

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

There are a lot of methods to call and learn more!

  1. /*
  3. Database operations
  4. Operation method: Face objects
  5. Production time:
  6. Current version: BqhMysql (mysqli) 1.0.1
  7. Software author: Sad Songs
  8. Contact QQ: 36975.
  9. Contact number: 18907975647
  10. Email: admin@q128.com
  11. Contact Address: Xiaosong town, Shicheng county, Ganzhou city, Jiangxi province
  12. Zip code: 342706
  14. */
  15. Class Mysql {
  16. Private $ LocalHost = 'localhost ';
  17. Private $ LoaclUser = 'root ';
  18. Private $ LocalPass = '20140901 ';
  19. Private $ LocalBase = 'jiangxibaiyi ';
  20. Private $ LocalCode = 'utf8 ';
  21. Private $ PreFix;
  22. Private $ Conn;
  23. Private $ Start = 0;
  24. Private $ Error = false; // database connection status; false indicates no connection or the connection is abnormal
  25. Public $ Err = true; // SQL execution result
  27. Private $ Table;
  28. Private $ Field = '*';
  29. Private $ Where = '';
  30. Private $ Order = '';
  32. Private $ PageSize = 0; // display by page-> how many entries per page, 0 is not displayed by page
  33. Private $ PageCount = 1; // display by page-> Total number of items
  34. Private $ PageNum = 1; // display by page-> Total number of pages
  35. Private $ PageNo = 1; // display by page-> current page
  36. Private $ PageKey = 'page'; // PageKey
  37. Private $ PageStart = 0; // display by page-> The number of returned results starting from
  40. Private $ Select;
  41. Private $ Rest;
  43. Private $ Result = false; // Result set
  45. Public $ FormArray = array ();
  47. Public $ region _id = 0;
  48. Private $ j = 0;
  51. Public function Parameter ($ Loca, $ Root, $ Pass, $ Base, $ Code, $ PreFix = ''){
  52. $ This-> LoaclUser = $ Root;
  53. $ This-> LocalBase = $ Base;
  54. $ This-> LocalCode = $ Code;
  55. $ This-> LocalHost = $ Loca;
  56. $ This-> LocalPass = $ Pass;
  57. $ This-> PreFix = $ PreFix;
  58. Return $ this;
  59. }
  60. Private function Connection ($ SQL ){
  61. ! Function_exists (mysqli_connect )? Die ('query failed, unable to load mysqli extension'): null;
  62. $ This-> Conn = @ new mysqli ($ this-> LocalHost, $ this-> LoaclUser, $ this-> LocalPass, $ this-> LocalBase );
  63. $ This-> Error = mysqli_connect_errno () = 0? True: false;
  64. ! $ This-> Error? Die ('database connection error, check database connection parameters'): null;
  65. $ This-> Conn-> query ('set names'. $ this-> LocalCode );
  66. $ This-> Rest = $ this-> Conn-> query ($ SQL );
  67. $ This-> Err = mysqli_error ($ this-> Conn );
  68. $ This-> consumer _id = mysqli_insert_id ($ this-> Conn );
  69. $ This-> Rest-> free_result;
  70. $ This-> Conn-> close;
  71. $ This-> FormArray = '';
  72. Return $ this;
  73. }
  75. Public function null (){
  76. $ This-> PageSize = 0;
  77. // $ This-> PageCount = 1;
  78. $ This-> PageStart = 1;
  79. $ This-> Field = '*';
  80. $ This-> Select = '';
  81. Unset ($ this-> Table, $ this-> Where, $ this-> Order, $ this-> Result );
  82. }
  84. Public function Table ($ TableName) {// data Table
  85. $ This-> null ();
  86. $ This-> Table = '''. $ this-> PreFix. $ TableName .''';
  87. Return $ this;
  88. }
  90. Public function Field ($ Array = '*') {// data Field
  91. ! Empty ($ this-> Field )? $ This-> Field = '': null;
  92. $ Array = explode (',', $ Array );
  93. Foreach ($ Array as $ field ){
  94. $ This-> Field. =! $ This-> Start? '''. $ Field. ''': ', ''. $ field .''';
  95. $ This-> Start ++;
  96. }
  97. $ This-> Start = 0;
  98. Return $ this;
  99. }
  101. Public function Where ($ Where) {// condition
  102. $ This-> Where = 'where'. $ where;
  103. Return $ this;
  104. }
  106. Public function Order ($ Order) {// sort
  107. $ This-> Order = 'Order by'. $ order;
  108. Return $ this;
  109. }
  111. Public function pk ($ key) {// pagination url parameter key
  112. $ This-> PageKey = $ key;
  113. Return $ this;
  114. }
  116. Public function Page ($ PageSize) {// Page
  117. $ This-> PageSize = $ PageSize;
  118. $ This-> PageNo = $ this-> get ($ this-> PageKey );
  119. $ This-> PageNo = empty ($ this-> PageNo) |! Isset ($ this-> PageNo) |! Is_numeric ($ this-> PageNo) | $ this-> PageNo <1? 1: $ this-> PageNo;
  120. Return $ this;
  121. }
  123. Public function post ($ Key, $ Filter = true ){
  124. Return $ Filter? Strip_tags ($ _ POST [$ Key]): $ _ POST [$ Key];
  125. }
  127. Public function get ($ Key, $ Filter = true ){
  128. Return $ Filter? Strip_tags ($ _ GET [$ Key]): $ _ GET [$ Key];
  129. }
  131. Public function Sel (){
  132. $ This-> Select = 'select'. $ this-> Field. 'from'. $ this-> Table. $ this-> Where. $ this-> Order;
  133. $ This-> Connection ($ this-> Select );
  134. If ($ this-> Rest-> num_rows ){
  135. While ($ Rs = $ this-> Rest-> fetch_assoc ()){
  136. $ This-> Result [] = $ Rs;
  137. }
  138. }
  139. $ DataBase = $ this-> Result;
  140. Return empty ($ DataBase )? False: $ DataBase;
  141. }
  143. Public function querys ($ SQL = '', $ Type = 'not', $ biao = false ){
  144. $ This-> Select = $ SQL;
  145. $ This-> Connection ($ this-> Select );
  146. If ($ this-> Rest-> num_rows ){
  147. If (! $ Biao ){
  148. While ($ Rs = $ this-> Rest-> fetch_array ()){
  149. $ This-> Result [] =! Preg_match ('/^ \ d + $/I', $ Type )? $ Rs: $ Rs [$ Type];
  150. }
  151. } Else {
  152. While ($ Rs = $ this-> Rest-> fetch_assoc ()){
  153. $ This-> Result [] = $ Rs;
  154. }
  155. }
  156. }
  157. $ DataBase = $ this-> Result;
  158. Return empty ($ DataBase )? False: $ DataBase;
  160. }
  162. Public function executes ($ SQL = ''){
  163. $ This-> Connection ($ SQL );
  164. Return $ this-> Rest;
  165. }
  168. Public function exists ($ T = '', $ F ='', $ W = ''){
  169. If (empty ($ F) {return 0 ;}
  170. $ Cmd = empty ($ W )? 'Select sum ('. $ F. ') as 'policyinum' from ''. $ this-> PreFix. $ T. ''': 'Select sum ('. $ F. ') as 'policyinum' from ''. $ this-> PreFix. $ T. ''where '. $ W;
  171. $ This-> Connection ($ cmd );
  172. Unset ($ T, $ F, $ W, $ cmd );
  173. $ Rel = $ this-> Rest-> fetch_array ();
  174. Return round ($ Rel ['categoryinum'], 2 );
  175. }
  178. Public function ExistsTo ($ Bili = 10000, $ T = '', $ F ='', $ W = ''){
  179. If (empty ($ F) {return 0 ;}
  180. $ Cmd = empty ($ W )? 'Select sum ('. $ F. ') as 'policyinum' from ''. $ this-> PreFix. $ T. ''': 'Select sum ('. $ F. ') as 'policyinum' from ''. $ this-> PreFix. $ T. ''where '. $ W;
  181. $ This-> Connection ($ cmd );
  182. Unset ($ T, $ F, $ W, $ cmd );
  183. $ Rel = $ this-> Rest-> fetch_array ();
  184. Return round ($ Rel ['policyinum'] * $ Bili );
  185. }
  188. Public function Select ($ Type = true, $ ListNum = 1) {// return record (array format, number of returned Records)
  189. $ This-> Select = 'select'. $ this-> Field. 'from'. $ this-> Table. $ this-> Where. $ this-> Order;
  190. If (is_numeric ($ ListNum )){
  191. If ($ this-> PageSize> 0 ){
  192. $ This-> Connection ($ this-> Select); // execute the query
  193. $ This-> PageCount = $ this-> Rest-> num_rows; // gets the total number of records.
  194. $ This-> PageNum = ceil ($ this-> PageCount/$ this-> PageSize); // total number of pages
  195. $ This-> PageNo = $ this-> PageNo> $ this-> PageNum? $ This-> PageNum: $ this-> PageNo;
  196. $ This-> PageStart = ($ this-> PageNo-1) * $ this-> PageSize; // The number of items returned from the current start
  197. $ This-> Select. = 'limit'. $ this-> PageStart. ','. $ this-> PageSize; // re-construct an SQL statement
  198. } Else {
  199. $ This-> Select. = 'limit '. $ ListNum; // reconstructs an SQL statement.
  200. }
  201. } Else {
  202. $ This-> Select. = 'limit 1'; // reconstructs an SQL statement.
  203. }
  204. // Echo $ this-> Select;
  205. $ This-> Connection ($ this-> Select); // run the query again
  206. If ($ this-> Rest-> num_rows) {// if the record exists
  207. If ($ Type ){
  208. While ($ Rs = $ this-> Rest-> fetch_array ()){
  209. $ This-> Result [] = $ Rs;
  210. }
  211. } Else {
  212. While ($ Rs = $ this-> Rest-> fetch_assoc ()){
  213. $ This-> Result [] = $ Rs;
  214. }
  215. }
  216. }
  217. If ($ ListNum = 1 or! Is_numeric ($ ListNum ))&&! $ This-> PageSize) {$ this-> Result = $ this-> Result [0];}
  218. $ DataBase = $ this-> Result;
  219. Return empty ($ DataBase )? False: $ DataBase;
  220. }
  222. Public function Num () {// total number of returned Records
  223. $ This-> Select = 'select'. $ this-> Field. 'from'. $ this-> Table. $ this-> Where. $ this-> Order;
  224. $ This-> Connection ($ this-> Select); // execute the query
  225. Return $ this-> Rest-> num_rows; // Retrieve the total number of records
  226. }
  228. Public function PageNav ($ NumNav = false) {// pagination
  229. $ Action = $ this-> get ('action ');
  230. ! Empty ($ Action) or $ Action = 'index ';
  231. $ Module = $ this-> get ('module ');
  232. ! Empty ($ Module) or $ Module = 'index ';
  233. $ NavUrl = '/'. $ Module. '/'. $ Action. '/'. $ this-> PageKey .'/';
  234. $ NaIndex = '/'. $ Module. '/'. $ Action;
  235. $ PageHtml = "\ n

    ";

  236. $ PageHtml. = ''. $ this-> PageCount. 'record '. $ this-> PageNo.'/'. $ this-> PageNum. 'page ';
  237. $ This-> PageNo <= 1 or $ PageHtml. = "homepage \ nPageNo-1)." \ "> Previous Page \ n ";
  238. If ($ NumNav) {$ PageHtml. = $ this-> NumPage ($ NavUrl );}
  239. $ This-> PageNo >=$ this-> PageNum or $ PageHtml. = "PageNo + 1 ). "\"> Next Page \ nPageNum. "\"> Last Page \ n ";
  240. $ PageHtml. ="

    \ N ";
  241. Return $ PageHtml;
  242. }
  244. Private function NumPage ($ Can = '') {// numeric page
  245. $ NumHtml = '';
  246. $ First = 1;
  247. $ Last = $ this-> PageNum;
  248. If ($ this-> PageNum> 5 ){
  249. If ($ this-> PageNo <$ this-> PageNum ){
  250. $ First = $ this-> PageNo-2;
  251. $ Last = $ this-> PageNo + 2;
  252. } Else {
  253. $ First = $ this-> PageNo-4;
  254. $ Last = $ this-> PageNum;
  255. }
  256. }
  257. If ($ First <1) {$ First = 1; $ Last = $ First + 4 ;}
  258. If ($ Last> $ this-> PageNum) {$ First = $ this-> PageNum-4; $ Last = $ this-> PageNum ;}
  259. For ($ I = $ First; $ I <= $ Last; $ I ++ ){
  260. $ NumHtml. = $ this-> PageNo! = $ I? "\ N \ t ". ''. $ I. ''. "\ n \ t": "\ n \ t ". ''. $ I. ''. "\ n \ t ";
  261. }
  262. Unset ($ Can, $ First, $ I, $ Last );
  263. Return $ NumHtml;
  264. }
  266. Public function UserPage ($ NumNav = false, $ PageName = 'index', $ Mulu = 'user') {// Member Center page
  267. $ NavUrl = '/'. $ Mulu. '/'. $ PageName. '/'. $ this-> PageKey .'/';
  268. $ PageHtml = "\ n

    ";

  269. $ PageHtml. = ''. $ this-> PageCount. 'record '. $ this-> PageNo.'/'. $ this-> PageNum. 'page ';
  270. $ This-> PageNo <= 1 or $ PageHtml. = "homepage \ nPageNo-1)." \ "> Previous Page \ n ";
  271. If ($ NumNav) {$ PageHtml. = $ this-> NumPage ($ NavUrl );}
  272. $ This-> PageNo >=$ this-> PageNum or $ PageHtml. = "PageNo + 1 ). "\"> Next Page \ nPageNum. "\"> Last Page \ n ";
  273. $ PageHtml. ="

    \ N ";
  274. Return $ PageHtml;
  275. }
  278. // Form processing starts
  280. // Submit when judging the form
  281. Public function FormIs ($ Keys = 'mm '){
  282. Return $ _ POST [$ Keys] = 1? True: false;
  283. }
  285. // Obtain data in post mode
  286. Public function _ post ($ Keys = '', $ TiHuan = ''){
  287. $ Values = strip_tags ($ _ POST [$ Keys]);
  288. $ This-> FormArray [$ Keys] = empty ($ Values )? $ TiHuan: $ Values;
  289. Return empty ($ Values )? $ TiHuan: $ Values;
  290. }
  292. // Get the data
  293. Public function _ get ($ Keys = '', $ TiHuan = ''){
  294. $ Values = strip_tags ($ _ GET [$ Keys]);
  295. Return empty ($ Values )? $ TiHuan: $ Values;
  296. }
  298. // Determine whether the value is a number and not less than 0
  299. Public function IsNum ($ Num = 0, $ Mesg = 'parameter must be a number '){
  300. If (is_numeric ($ Num )&&! Empty ($ Num) & $ Num> = 0 ){
  301. Return $ Num;
  302. } Else {
  303. Die ($ Mesg );
  304. }
  305. }
  307. // Returns True/False if it is a number and is not less than 0.
  308. Public function NumBer ($ Num = 0 ){
  309. Return is_numeric ($ Num )&&! Empty ($ Num) & $ Num> = 0? True: false;
  310. }
  312. // Detection data seems to exist
  313. Public function IsData ($ Types = true, $ memg = 'data already exists '){
  314. $ This-> Connection ('select'. $ this-> Field. 'from'. $ this-> Table. $ this-> Where );
  315. If ($ Types ){
  316. $ This-> Rest-> num_rows> 0? Die ($ memg): null;
  317. } Else {
  318. Return $ this-> Rest-> num_rows;
  319. }
  320. }
  323. // Write database records
  324. Public function into ($ Mesg = ''){
  325. ! Is_array ($ this-> FormArray )? Die ($ Mesg): null;
  326. $ SQL = 'insert'. $ this-> Table .'('';
  327. $ I = 0;
  328. Foreach ($ this-> FormArray as $ Key => $ Val ){
  329. $ Duan. =! $ I? $ Key. ''': ', ''. $ Key .''';
  330. If (is_numeric ($ Val )){
  331. $ Vals. =! $ I? $ Val: ','. $ Val;
  332. } Else {
  333. $ Vals. =! $ I? '\ ''. $ Val.' \'': ', \ ''. $ Val .'\'';
  334. }
  335. $ I ++;
  336. }
  337. $ SQL. = $ Duan. ') values ('. $ Vals .')';
  339. // @ File_put_contents ('1. SQL ', $ SQL, FILE_APPEND );
  341. $ This-> Connection ($ SQL );
  342. Return! Empty ($ this-> Err )? False: true;
  343. }
  345. // Write data in array form
  346. Public function MsgBox ($ Table = '', $ Filed = array ()){
  347. $ This-> Table ($ Table );
  348. Foreach ($ Filed as $ Key => $ Val ){
  349. $ This-> FormArray [$ Key] = $ Val;
  350. }
  351. Return $ this-> Into ('data not obtained ');
  352. }
  354. // Modify database records
  355. Public function Edit ($ Array = array ()){
  356. If (empty ($ Array) {$ Array = $ this-> FormArray ;}
  357. If (! Is_array ($ Array) | empty ($ Array )){
  358. Return false;
  359. } Else {
  360. $ SQL = 'update'. $ this-> Table. 'set ';
  361. $ I = 0;
  362. $ Sub = '';
  363. $ Huan = array ('-' => '[jian]', '+' => '[jia]', '*' => '[cheng]', '/' => '[chu]');
  364. $ Zhan = array ('[jian]' => '-', '[jia]' => '+', '[cheng]' => '*', '[chu]' => '/');
  366. Foreach ($ Array as $ Files => $ Val ){
  367. $ Val =! Is_numeric ($ Val )&&! Preg_match ('/\' \ w + \ '\ s * (\ + | \-| \ * | \/)/I', $ Val )? '\ ''. $ Val.' \'': $ Val;
  368. Foreach ($ Huan as $ key => $ val ){
  369. $ Val = str_replace ($ key, $ val, $ Val );
  370. }
  371. $ Duan =! $ I? '''. $ Files. ''= ':',''. $ Files. ''= ';
  372. $ Sub. = $ duan. $ Val;
  373. $ I ++;
  374. }
  375. $ SQL. = $ Sub. $ this-> Where;
  376. Foreach ($ Zhan as $ Fan =>$ Hui ){
  377. $ SQL = str_replace ($ Fan, $ Hui, $ SQL );
  378. }
  380. // Echo $ SQL; die;
  382. $ This-> Connection ($ SQL );
  383. Unset ($ Array, $ duan, $ Fan, $ Files, $ Huan, $ Hui, $ I, $ key, $ SQL, $ Sub, $ Val, $ Zhan, $ val );
  384. Return! Empty ($ this-> Err )? False: true;
  385. }
  386. }
  388. // Delete database records
  389. Public function del (){
  390. $ SQL = 'delete from'. $ this-> Table. $ this-> Where;
  391. $ This-> Connection ($ SQL );
  392. Unset ($ SQL );
  393. Return! Empty ($ this-> Err )? False: true;
  394. }
  396. // Form processing ends
  398. // Page jump
  399. Public function Msg ($ Text = 'Operation succeeded '){
  400. Echo' ';
  401. Echo'

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Related Keywords:
php mysql database connection class share mysql database mysql database class how to share mysql database in network php class self php oop database class php database class

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