一个ORACLE分页程序_PHP教程

oracle8i"); putenv("TNS_ADMIN=$ORACLE_HOME/network/admin"); $OracleDBConn = OCILogon("purk","purk","lengana.world"); // This query counts the records $sql_count = "SELECT COUNT(*) FROM SAMPLE_TABLE"; // Parse the SQL string & execute it $row_count=OCIParse($OracleDBConn, $sql_count); OCIExecute($row_count); // From the parsed & executed query, we get the amount of records found. // Im not storing this result into a session variable because it allows for // new records to be shown as it is entered by another user while the result // is printed. if (OCIFetch($row_count)) { $num_rows = OCIResult($row_count,1); } else { $num_rows = 0; // If no record was found } // Free the resources that were used for this query OCIFreeStatement($row_count); // We need to prepare the query that will print the results as a page. I will // explain the query to you in detail. // If no page was specified in the url (ex. http://mysite.com/result.php?page=2), // set it to page 1. if (empty($page) || $page == 0) { $page = 1; } // The start range from where the results should be printed $start_range = (($page - 1) * $display_rows) + 1; // The end range to where the results should be printed $end_range = $page * $display_rows; // The main query. It consists of 3 "SELECT" statements nested into each // other. The center query is the query you would normally use to return the // records you want. Do you ordering and "WHERE" clauses in this statement. // We select the rows to limit our results but because the row numbers are // assigned to the rows before any ordering is done, lets the code print the // result unsorted. // The second nested "SELECTED" assigns the new row numbers to the result // for us to select from. $sql = "SELECT PK_ID, FIELD1, FIELD2, FIELD3, ROW_NO FROM (SELECT PK_ID, "; $sql .= "FIELD1, FIELD2, FIELD3, ROWNUM ROW_NO FROM (SELECT PK_ID, FIELD1, "; $sql .= "FIELD2, FIELD3 FROM SAMPLE_TABLE ORDER BY FIELD3)) WHERE ROW_NO BETWEEN "; $sql .= $start_range." AND ".$end_range; // start results formatting echo ""; echo ""; echo "PK ID"; echo "Field 1"; echo "Field 2"; echo "Field 3"; echo "Row No"; echo ""; if ($num_rows != 0) { // Parse the SQL string & execute it $rs=OCIParse($OracleDBConn, $sql); OCIExecute($rs); // get number of columns for use later $num_columns = OCINumCols($rs); while (OCIFetch($rs)){ echo ""; for ($i = 1; $i
Total pages: ".$total_pages."
"; echo "
Number of records: ".$num_rows."
"; echo "
The SQL Query is: ".$sql."
"; ?>