php pdo encapsulation class implements mysql data addition, deletion, checking and modification

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Release: 2016-07-25 08:51:49
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  1. define('DSN', 'mysql:host=127.0.0.1;dbname=baozhong_tour'); //Constant of database address + database name

  2. define('DB_USERNAME ', 'root'); //Database username
  3. define('DB_USERPWD', ''); //Database password
  4. ?>
  5. /**
  6. * @author shuimugan
  7. * @version 0.2
  8. * @return PDOStatement
  9. */
  10. function getConn() {
  11. try {
  12. $db = new PDO(DSN, DB_USERNAME, DB_USERPWD); //Create a pdo object and pass in the database parameter information
  13. $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // Set database error information
  14. $db->query('set names utf8;'); //Set encoding to utf8
  15. return $db;
  16. }
  17. catch (PDOException $e) {
  18. echo 'Data processing error, please contact Website administrator!';
  19. print_r($e);//Super detailed error message, this sentence must be commented after going online!
  20. return false;
  21. }
  22. }
  23. /**
  24. * @author shuimugan
  25. * @version 0.2
  26. * @param String $tablename table name, type is string
  27. * @param Array $column_name column name, the format of the array is required
  28. * @param String $condition condition, such as 'where name=? and pws=?' or 'name like?'
  29. * @param Array $condition_value The data corresponding to the condition, the type is required to be an array, such as 'name=? and pws=?',
  30. * @return Array returns an Result set array format
  31. * @example $column_name=array('*');
  32. $condition_value=array('1');
  33. $limit='limit 0,10';
  34. $res=easy_select('user', $column_name, 'where id=? ', $condition_value,$limit);
  35. */
  36. function easy_select( $tablename,$column_name,$condition,$condition_value,$limit) {
  37. try {
  38. $db=getConn();
  39. $sql='select ';//Initialize sql statement
  40. foreach ($column_name as $col_name) {
  41. //Dynamicly append column names into sql statements
  42. if($col_name=='*'){
  43. $sql.='*';
  44. break;
  45. }
  46. if($col_name==end($column_name))
  47. {
  48. $sql.=$col_name." ";//If it is the last one, the statement does not splice comma
  49. }else {
  50. $sql.=$col_name.", ";//Splice column name + comma
  51. }
  52. }
  53. $sql.="from ".$tablename." ";//Splicing table name
  54. $sql.=$condition.' ';//Splicing conditional statement
  55. if(strlen($limit)>0){
  56. $sql.=$limit;//Splice the limit statement
  57. }
  58. $db = new PDO(DSN, DB_USERNAME, DB_USERPWD);//Create a pdo object and pass in the database parameter information
  59. $db->setAttribute(PDO:: ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);//Set database error information
  60. $db->query('set names utf8;');//Set encoding to utf8
  61. $stmt = $db->prepare($sql) ;
  62. $i=1;//Start counting, calculate the number of?
  63. $j=count($condition_value);
  64. for (; $i <= $j; ) {
  65. $stmt->bindParam($i , $condition_value[$i-1]);//Bind parameters
  66. $i++;
  67. }
  68. //Query
  69. $stmt->setFetchMode(PDO::FETCH_ASSOC);//Set to get data through fields
  70. $stmt ->execute();
  71. //Get data
  72. return $stmt->fetchAll();
  73. //return $stmt->rowCount();
  74. } catch (PDOException $e) {
  75. return false;
  76. echo 'Data processing error, please contact the website administrator!';
  77. print_r($e);//Super detailed error message, this sentence must be commented after going online!
  78. }
  79. }
  80. /**
  81. * @author shuimugan
  82. * @version 0.2
  83. * @param String $tablename table name, type is string
  84. * @param Array $column_name column name, the format of the array is required
  85. * @param String $condition condition, such as 'where name=? and pws=?' or 'name like?'
  86. * @param Array $condition_value The data corresponding to the condition, the type is required to be an array, such as 'name=? and pws=?',
  87. * @return int returns the record Number of items
  88. * @example $column_name=array('*');
  89. $condition_value=array('1');
  90. $limit='limit 0,10';
  91. $res=easy_selectCount('user', $column_name , 'where id=? ', $condition_value,$limit);
  92. */
  93. function easy_selectCount($tablename,$column_name,$condition,$condition_value,$limit) {
  94. try {
  95. $db=getConn();
  96. $sql='select ';//Initialize sql statement
  97. foreach ($column_name as $col_name) {
  98. //Dynamicly append column names into sql statements
  99. if($col_name=='*'){
  100. $sql.='*';
  101. break;
  102. }
  103. if($col_name==end($ column_name))
  104. {
  105. $sql.=$col_name." ";//If it belongs to the last one, the statement does not splice the comma
  106. }else {
  107. $sql.=$col_name.", ";//Splice the column name + comma
  108. }
  109. }
  110. $sql.="from ".$tablename." ";//Splicing table name
  111. $sql.=$condition.' ';//Splicing conditional statement
  112. if(strlen($limit)> 0){
  113. $sql.=$limit;//Splicing limit statement
  114. }
  115. ;
  116. $db = new PDO(DSN, DB_USERNAME, DB_USERPWD);//Create a pdo object and pass in the database parameter information
  117. $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);//Set the database Error message
  118. $db->query('set names utf8;');//Set encoding to utf8
  119. $stmt = $db->prepare($sql);
  120. $i=1;//Start counting, Calculate the number of
  121. $j=count($condition_value);
  122. for (; $i <= $j; ) {
  123. $stmt->bindParam($i, $condition_value[$i-1]);/ / Bind parameters
  124. $i++;
  125. }
  126. // Query
  127. //$stmt->setFetchMode(PDO::FETCH_ASSOC);//Set to get data through fields
  128. $stmt->execute();
  129. // Get data
  130. return $stmt->rowCount();
  131. } catch (PDOException $e) {
  132. return false;
  133. echo 'Data processing error, please contact the website administrator!';
  134. print_r($e);// Super detailed error message, you must comment this sentence after going online!
  135. }
  136. }
  137. /**
  138. * @author shuimugan
  139. * @version 0.2
  140. * @param String $tablename table name, type is string
  141. * @param Array $column_name column name, the format of the array is required
  142. * @param Array $column_value corresponding data, requirements The format of the array
  143. * @return int returns the last incremented id
  144. * @example $column_name=array('pwd','ip','name');
  145. $column_value=array('1246','11.11.11.11 ','Zhang San');
  146. echo easy_insert('user',$column_name,$column_value);
  147. */
  148. function easy_insert($tablename,$column_name,$column_value) {
  149. try {
  150. $db=getConn( );
  151. $sql='INSERT INTO ';//Initialize sql statement
  152. $sql.=$tablename.' (';//Splice table name
  153. foreach ($column_name as $col_name) {
  154. //Dynamicly append column name Enter the sql statement
  155. if($col_name==end($column_name))
  156. {
  157. $sql.=$col_name." )";//If it is the last one, splice the right bracket
  158. }else {
  159. $sql.=$ col_name.", ";//Splicing column name + comma
  160. }
  161. }
  162. $sql.=' VALUES (';//Splicing $condition_value statement
  163. for ($i=0; $i < count($column_name) ; $i++) {//Splicing question marks?
  164. if ($i==count($column_name)-1) {
  165. $sql.='?) ;';
  166. }else {
  167. $sql.='?,' ;
  168. }
  169. }
  170. $db = new PDO(DSN, DB_USERNAME, DB_USERPWD);//Create a pdo object and pass in the database parameter information
  171. $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);/ /Set database error information
  172. $db->query('set names utf8;');//Set encoding to utf8
  173. $stmt = $db->prepare($sql);
  174. for ($i=1; $i <= count($column_name); $i++) {//Splicing question marks?
  175. $stmt->bindParam($i, $column_value[$i-1]);
  176. }
  177. // Query
  178. // echo $sql;
  179. $stmt->setFetchMode(PDO::FETCH_ASSOC);//Set to get data through fields
  180. $stmt->execute();
  181. //Get data
  182. return $db->lastInsertId() ;
  183. } catch (PDOException $e) {
  184. return false;
  185. echo 'Data processing error, please contact the website administrator!';
  186. print_r($e);//Super detailed error message, this sentence must be commented after going online Words!
  187. }
  188. }
  189. /**
  190. * @author shuimugan
  191. * @version 0.2
  192. * @param String $tablename table name, type is string
  193. * @param Array $column_name column name, the format of the array is required
  194. * @param Array $column_value corresponding data, requirements The format of the array
  195. * @param String $condition corresponds to the where statement string such as 'where id=?'
  196. * @param Array $condition_value corresponds to where The data type of the question mark behind is required to be an array
  197. * @return int Returns the affected data Number of rows
  198. * @example $column_name=array('pwd','ip','name');
  199. $column_value=array('123456','127.152.123.132','Zhang San');
  200. $condition_value= array('1');
  201. easy_update('user',$column_name,$column_value,'where id=?',$condition_value,null);
  202. */
  203. function easy_update($tablename,$column_name,$column_value,$condition,$condition_value,$limit) {
  204. try {
  205. $db=getConn();
  206. $sql='UPDATE ';//Initialize the sql statement
  207. $sql.=$tablename.' SET ';//Splice the table name
  208. foreach ($column_name as $col_name) {
  209. //Dynamicly append the column name into the sql statement
  210. if($col_name==end($column_name))
  211. {
  212. $sql.=$col_name." = ? ";//If it belongs to the last
  213. }else {
  214. $sql.=$col_name." = ?, " ;//Splicing column name + comma
  215. }
  216. }
  217. $sql.=$condition;//Splicing conditional statement
  218. if(strlen($limit)>0){
  219. $sql.=$limit;//Splicing limit Statement
  220. }
  221. $db = new PDO(DSN, DB_USERNAME, DB_USERPWD);//Create a pdo object and pass in the database parameter information
  222. $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);//Set Database error message
  223. $db->query('set names utf8;');//Set encoding to utf8
  224. $stmt = $db->prepare($sql);//Prepare statement
  225. $i=1;
  226. $total=count($column_name)+count($condition_value);
  227. for (;$i <= count($column_name);) {
  228. $stmt->bindParam($i, $column_value[$i- 1]);//Bind the data parameter corresponding to the column name
  229. $i++;
  230. }
  231. $j=1;
  232. for (;$i <= $total;) {
  233. $stmt->bindParam($i, $condition_value[$j-1]);//The data parameters corresponding to the binding conditions
  234. $i++;
  235. $j++;
  236. }
  237. //Query
  238. $stmt->setFetchMode(PDO::FETCH_ASSOC);//Set to get data through fields
  239. $stmt->execute();
  240. //Get data
  241. return $stmt->rowCount() ;
  242. } catch (PDOException $e) {
  243. return false;
  244. echo 'Data processing error, please contact the website administrator!';
  245. print_r($e);//Super detailed error message, this sentence must be commented after going online Words!
  246. }
  247. }
  248. /**
  249. * @author shuimugan
  250. * @version 0.2
  251. * @param String $tablename table name
  252. * @param String $condition conditions such as 'where id= ?'
  253. * @param Array $condition_value The value corresponding to the condition is the value corresponding to ?
  254. * @param String $limit limit statement such as 'limit 0,1'
  255. * @return int Returns the number of affected results
  256. * @example $condition_value=array('83');
  257. echo easy_delete('user', 'where id =?', $condition_value, null);
  258. */
  259. function easy_delete($tablename,$condition,$condition_value,$limit) {
  260. try {
  261. $db=getConn();
  262. $sql='DELETE FROM ';//Initialize sql statement
  263. $sql.=$tablename.' ';//Splice table name
  264. $sql.=$condition;//Splice conditional statement
  265. if(strlen($limit)>0){
  266. $sql.=$limit;//Splice the limit statement
  267. }
  268. $db = new PDO(DSN, DB_USERNAME, DB_USERPWD);//Create a pdo object and pass in the database parameter information
  269. $db->setAttribute(PDO:: ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);//Set database error information
  270. $db->query('set names utf8;');//Set encoding to utf8
  271. $stmt = $db->prepare($sql) ;//Prepare statement
  272. for ($i=1;$i <= count($condition_value);) {
  273. $stmt->bindParam($i, $condition_value[$i-1]);//Bind Data parameters corresponding to certain conditions
  274. $i++;
  275. }
  276. // Query
  277. $stmt->setFetchMode(PDO::FETCH_ASSOC);//Set to obtain data through fields
  278. $stmt->execute();
  279. // Get Data
  280. return $stmt->rowCount();
  281. } catch (PDOException $e) {
  282. return false;
  283. echo 'Data processing error, please contact the website administrator!';
  284. print_r($e);//Super Detailed error message, you must comment this sentence after going online!

  285. }

  286. }
  287. ?>

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