- Post in | WebDevelop/PHP
- Post at | 2007. 10. 5. 15:47 | by 쥬리엘
Class DB Connection
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 | <?php class Mysql { var $szHost ; // 호스트 var $szUser ; // 사용자 var $szPassword ; // 비밀번호 var $szDataBase ; // 데이터베이스 var $resConn ; // 연결 핸들 var $resQuery ; // 쿼리 핸들 var $szQuery ; // 쿼리문 # 생성자 function Mysql( $szHost , $szUser , $szPassword ) { $this ->szHost = $szHost ; $this ->szUser = $szUser ; $this ->szPassword = $szPassword ; } # 연결 function connect() { $this ->resConn = @mysql_connect( $this ->szHost, $this ->szUser, $this ->szPassword) or die ( "DB 연결에 실패하였습니다" ); } # DB 선택 function selectDB( $szDataBase = NULL) { if (isset( $szDataBase )) { $this ->szDataBase = $szDataBase ; } @mysql_select_db( $this ->szDataBase, $this ->resConn) or die ( $this ->szDataBase . " 데이터베이스가 존재하지 않거나 접근권한이 없습니다." ); } # 쿼리를 실행한다 function &query( $szQuery ) { $this ->szQuery = $szQuery ; $this ->resQuery = @mysql_query( $this ->szQuery, $this ->resConn); if ( $this ->resQuery) { return $this ->resQuery; } else { echo '<font color="red">DB가 에러가 났습니다.' ; echo " "; echo mysql_error(); echo " "; echo $this ->szQuery; echo '</font>' ; } } # 쿼리문을 리턴 function getQuery() { return $this ->szQuery; } function &select( $szTable , $szField = '*' , $szWhere = NULL, $szOrderBy = NULL, $nCount = NULL, $nStart = NULL) { $szQuery = "SELECT $szField FROM $szTable" ; if (isset( $szWhere )) { $szQuery .= " WHERE $szWhere" ; } if (isset( $szOrderBy )) { $szQuery .= " $szOrderBy" ; } if (isset( $nStart )) { $szQuery .= " LIMIT $nStart, $nCount" ; } else if (isset( $nCount )) { $szQuery .= " LIMIT $nCount" ; } return $this ->query( $szQuery ); } function &slt( $szTable , $szField = '*' , $szWhere = NULL, $szOrderBy = NULL, $nCount = NULL, $nStart = NULL) { $szQuery = "SELECT $szField FROM $szTable" ; if (isset( $szWhere )) { $szQuery .= " WHERE $szWhere" ; } if (isset( $szOrderBy )) { $szQuery .= " $szOrderBy" ; } if (isset( $nStart )) { $szQuery .= " LIMIT $nStart, $nCount" ; } else if (isset( $nCount )) { $szQuery .= " LIMIT $nCount" ; } $res = $this ->query( $szQuery ); $rs = $this ->fetch( $res ); return $rs ; } // $const = MYSQL_NUM, MYSQL_ASSOC, and MYSQL_BOTH function &fetch( $resQuery = NULL, $const = MYSQL_ASSOC) { if (!isset( $resQuery )) { $resQuery = $this ->resQuery; } return mysql_fetch_array( $resQuery , $const ); } function freeResult( $resQuery = NULL) { if (!isset( $resQuery )) { $resQuery = $this ->resQuery; } return @mysql_free_result( $resQuery ); } function numRows( $resQuery = NULL) { if (!isset( $resQuery )) { $resQuery = $this ->resQuery; } return @mysql_num_rows( $resQuery ); } function getCount( $szTable , $szWhere = NULL, $szField = '*' , $sOrder = NULL) { $szQuery = "SELECT COUNT($szField) FROM $szTable" ; if (isset( $szWhere )) { $szQuery .= " WHERE $szWhere" ; } if ( $sOrder ) { $szQuery .= $sOrder ; } $res = $this ->query( $szQuery ); $rs = $this ->fetch( $res , MYSQL_NUM); return $rs [0]; } function getMax( $szTable , $szField = '*' , $szWhere = NULL) { $szQuery = "SELECT MAX($szField) FROM $szTable" ; if (isset( $szWhere )) { $szQuery .= " WHERE $szWhere" ; } $res = $this ->query( $szQuery ); $rs = $this ->fetch( $res , MYSQL_NUM); return $rs [0]; } function getMin( $szTable , $szField = '*' , $szWhere = NULL) { $szQuery = "SELECT MIN($szField) FROM $szTable" ; if (isset( $szWhere )) { $szQuery .= " WHERE $szWhere" ; } $res = $this ->query( $szQuery ); $rs = $this ->fetch( $res , MYSQL_NUM); return $rs [0]; } function &insert( $szTable , $arrFieldValue , $bOpt = FALSE) { // 데이터 입력 $nTmp = 0; if ( $bOpt ) { $nSize = sizeof( $arrFieldValue ) - 1; foreach ( $arrFieldValue as $arrTmp ) { $nTmp1 =0; foreach ( $arrTmp as $szField => $szValue ) { if ( $nTmp ==0) $szFields .= ( $nTmp1 ==0)? $szField : ", $szField" ; $szValues .= ( $nTmp1 == 0)? "('$szValue'" : ", '$szValue'" ; $nTmp1 ++; } $szValues .= ( $nTmp == $nSize ) ? ")" : ")," ; $nTmp ++; } } else { foreach ( $arrFieldValue as $szField => $szValue ) { $szFields .= ( $nTmp == 0) ? $szField : ", $szField" ; $szValues .= ( $nTmp == 0) ? "('$szValue'" : ", '$szValue'" ; $nTmp ++; } $szValues .= ")" ; } $szQuery = sprintf( "INSERT INTO %s (%s) VALUES %s" , $szTable , $szFields , $szValues ); return $this ->query( $szQuery ); } function &update( $szTable , $arrFieldValue , $szWhere = NULL) { // 데이터 수정(배열을 이용) $nTmp =0; foreach ( $arrFieldValue as $szField => $szValue ) { $szFields .= ( $nTmp ==0)? "$szField='$szValue'" : ", $szField='$szValue'" ; $nTmp ++; } if ( $szWhere ) { $szWhere = "WHERE $szWhere" ; } $szQuery = sprintf( "UPDATE %s SET %s %s " , $szTable , $szFields , $szWhere ); return $this ->query( $szQuery ); } function & delete ( $szTable , $szWhere = NULL) { $szQuery = "DELETE FROM $szTable" ; if (isset( $szWhere )) { $szQuery .= " WHERE $szWhere" ; } return $this ->query( $szQuery ); } function dataSeek( $n , $resQuery = NULL) { if (!isset( $resQuery )) { $resQuery = $this ->resQuery; } return mysql_data_seek( $resQuery , $n ); } function getLastInsertID() { $res = $this ->query( "SELECT LAST_INSERT_ID()" ); $rs = $this ->fetch( $res , MYSQL_NUM); return $rs [0]; } function close() { if ( $this ->resConn) { @mysql_close( $this ->resConn); } } } ?> |
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