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File: drasticSrcMySQL.class.php

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File: drasticSrcMySQL.class.php
Role: Class source
Content type: text/plain
Description: connect to MySQL table
Class: DrasticTools
Visualize MySQL data in Grid, Cloud and Map
Author: By
Last change: Minor changes in DrasticGrid and DrasticMap
Robust against PHP strict error mode
Date: 12 years ago
Size: 14,213 bytes
 

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<?php /* DrasticTools version 0.6.18 * DrasticTools is released under the GPL license: * Copyright (C) 2007 email: info@drasticdata.nl * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * ========================================================================================= * If you find this sofware useful, we appreciate your donation on http://www.drasticdata.nl * Suggestions for improvement can be sent to: info@drasticdata.nl * ========================================================================================= */ class drasticSrcMySQL { // these options should be set via the options argument on the constructor! public $add_allowed = true; // may the user add records? Default is true. public $delete_allowed = true; // may the user delete records? Default is true. public $editablecols; // array of columnnames to be editable. Defaults to all columns except the id column public $defaultcols; // array of columnnames and values; only records that satisfy these conditions will be selected; // added records will have these values as default public $sortcol; // name of column to sort on initially. Defaults to the id column. public $sort; // sort ascending (a) or descending (d)? Default is a. public $SQLCharset = "utf8"; // character set of the strings in the table public $HTMLCharset = "UTF-8"; // character set for xhttprequest // General variables public $orderbystr, $wherestr, $addstr; public $idname; public $idcolnr; public $result; public $num_rows; public $num_fields; public $cols; public $cols_numeric; private $max; function __construct($server, $user, $pw, $db, $table, $options = null) { if (!isset($_REQUEST["op"])) return; if ($options) { if (isset($options["add_allowed"])) $this->add_allowed = $options["add_allowed"]; if (isset($options["delete_allowed"])) $this->delete_allowed = $options["delete_allowed"]; if (isset($options["editablecols"])) $this->editablecols = $options["editablecols"]; if (isset($options["defaultcols"])) $this->defaultcols= $options["defaultcols"]; if (isset($options["sortcol"])) $this->sortcol= $options["sortcol"]; if (isset($options["sort"])) $this->sort= $options["sort"]; if (isset($options["SQLCharset"])) $this->SQLCharset= $options["SQLCharset"]; if (isset($options["HTMLCharset"])) $this->HTMLCharset= $options["HTMLCharset"]; } /* Optionally retrieve parameters from the addparams parameter. * Uncomment the line below and change "myparameter" to the name of your parameter * If you pass multiple parameters copy the line multiple times * * $myparameter = $_REQUEST["myparameter"]; */ $this->conn = mysql_connect($server, $user, $pw) or die(mysql_error()); mysql_select_db($db) or die (mysql_error()); $this->table = $table; $res = mysql_query("SET NAMES '" . $this->SQLCharset . "'", $this->conn); // Initialize the name of the id field, column names and numeric columns: $idresult = $this->metadata(); $primary_found = false; for($i=0; $i < mysql_num_fields($idresult); $i++) { $fld = mysql_fetch_field($idresult, $i); if ($primary_found == false) { if ($fld->primary_key == 1) { $this->idname = $fld->name; $this->idcolnr = $i; $primary_found = true; } elseif ($fld->unique_key == 1) { $this->idname = $fld->name; $this->idcolnr = $i; } } $this->cols[] = $fld->name; if ($fld->numeric == 1) $this->cols_numeric[] = $fld->name; } if (!isset($this->idname)) die("Could not find primary or unique key"); // Initialize editablecols if not done yet: if (!isset($this->editablecols)) { mysql_field_seek($idresult, 0); for($i=0; $i < mysql_num_fields($idresult); $i++) { $fldname = mysql_fetch_field($idresult)->name; if ($fldname != $this->idname) $this->editablecols[] = $fldname; } } mysql_free_result($idresult); // Initialize Field types: $this->fldtypes = array(); $colresult = mysql_query("SHOW COLUMNS FROM " . $this->table, $this->conn) or die(mysql_error()); for($i=0; $i < mysql_num_rows($colresult); $i++) { list($fldname, $fldtype, $fldnull, $fldkey, $flddefault, $fldextra) = mysql_fetch_row($colresult); $this->fldtypes[$fldname] = $fldtype; } mysql_free_result($colresult); // Calculate the WHERE string and the string for the ADD operation, if the defaultcols option is set. $this->wherestr = ""; $this->addstr = " () VALUES () "; if ($this->defaultcols){ foreach ($this->defaultcols as $key => $value) $assignment[] = $key . " = '" . $value . "'"; $wherestr1 = implode(" AND ", $assignment); $this->wherestr = sprintf(" WHERE %s ", $wherestr1); $addstr1 = implode(", ", array_keys($this->defaultcols)); $addstr2 = implode(", ", array_map(array ($this, "addquotes"), array_values($this->defaultcols))); $this->addstr = sprintf(" (%s) VALUES (%s) ", $addstr1, $addstr2); } // Do the sorting: if (isset($_REQUEST["sortcol"])) $this->sortcol = mysql_real_escape_string($_REQUEST["sortcol"]); if (isset($_REQUEST["sort"])) $this->sort = mysql_real_escape_string($_REQUEST["sort"]); if (!$this->sortcol) $this->sortcol = $this->idname; if (!$this->sort) $this->sort = "a"; $this->orderbystr = " ORDER BY " . $this->sortcol . ($this->sort == "d"?" DESC":""); header( "Expires: Mon, 26 Jul 1997 05:00:00 GMT" ); // disable IE caching header( "Last-Modified: " . gmdate( "D, d M Y H:i:s" ) . " GMT" ); header( "Cache-Control: no-cache, must-revalidate" ); header( "Pragma: no-cache" ); if (isset($_REQUEST["op"])) $op = $_REQUEST["op"]; else $op = ""; if (isset($_REQUEST["id"])) $id = $_REQUEST["id"]; if (isset($_REQUEST["col"])) $col = $_REQUEST["col"]; if (isset($_REQUEST["value"])) $value = $_REQUEST["value"]; if ($op != "vb" && $op != "vc") header("Content-Type: text/html; charset=".$this->HTMLCharset); switch ($op) { case ("a") : if ($this->add_allowed) exit($this->add()); case ("d") : if ($this->delete_allowed) exit($this->delete($id)); case ("u") : exit($this->update($id, $col, rawurldecode($value))); } // Get the table in memory $this->result = $this->select(); $this->num_rows = mysql_num_rows($this->result); $this->num_fields = mysql_num_fields($this->result); if ($op == "v") exit($this->view()); if ($op == "vm") exit($this->view_meta()); if ($op == "vb") exit($this->view_bar()); if ($op == "vc") exit($this->view_circle()); if ($op == "vl") exit($this->view_label()); if ($op == "vrn") exit($this->view_rownr()); } function __destruct() { if ($this->result) mysql_free_result($this->result); if ($this->conn) mysql_close($this->conn); } private function view_meta(){ $result[0] = $this->num_rows; $result[1] = $this->num_fields; $result[2] = $this->idname; $result[3] = $this->idcolnr; $result[4] = $this->cols; $result[5] = $this->cols_numeric; $result[6] = $this->add_allowed; $result[7] = $this->delete_allowed; $result[8] = $this->editablecols; $result[9] = $this->defaultcols; $result[10] = $this->sortcol; $result[11] = $this->sort; $result[12] = $this->fldtypes; return(json_encode($result)); } // // These protected functions can be overruled if you want to redefine your datasource // protected function select(){ $res = mysql_query("SELECT * FROM $this->table" . $this->wherestr . $this->orderbystr, $this->conn) or die(mysql_error()); return ($res); } protected function add(){ mysql_query("INSERT INTO $this->table" . $this->addstr, $this->conn) or die(mysql_error()); if (mysql_affected_rows($this->conn) == 1) return(true); else return(false); } // Override this function if you want to use (join) query on multiple tables: protected function metadata(){ $res = mysql_query("SELECT * FROM $this->table LIMIT 1", $this->conn); return ($res); } // // Private functions only visible within the class // private function exists($id, $fld = "") { $res = $this -> select(); // check field if ($fld != "") { $found = false; while (($field = mysql_fetch_field($res)) != null) { if ($field->name == $fld) { $found = true; break; } } if (!$found) return(false); } // check id for ($i=0; $i < mysql_num_rows($res); $i++) { $row = mysql_fetch_array($res); if ($row[$this->idcolnr] == $id) return(true); } return(false); } private function delete($id){ if (!$this->exists($id)) return(false); mysql_query("DELETE FROM $this->table WHERE $this->idname='$id'", $this->conn) or die(mysql_error()); if (mysql_affected_rows($this->conn) == 1) return(json_encode(true)); else return(json_encode(false)); } private function update($id, $fld, $value){ if ((in_array($fld, $this->editablecols)) && $this->exists($id, $fld)) { mysql_query("UPDATE $this->table SET $fld='$value' WHERE $this->idname='$id'", $this->conn) or die(mysql_error()); if (mysql_affected_rows($this->conn) == 1) { return("1"); } else { $res = mysql_query("SELECT $fld FROM $this->table WHERE $this->idname='$id'", $this->conn) or die(mysql_error()); $row = mysql_fetch_array($res); if ($row[0] == $value) return("1"); else return("0"); } } return("0"); } private function view_rownr(){ if (isset($_REQUEST["id"])){ mysql_data_seek($this->result, 0); for ($i = 0; $i < $this->num_rows; $i++) { $value = mysql_fetch_array($this->result); if ($value[$this->idcolnr] == $_REQUEST["id"]) { return(json_encode($i)); } } } return(json_encode(-1)); } private function view(){ if ($this->num_rows == 0) return(json_encode(array(null, null))); if (isset($_REQUEST["cols"])) $cols = explode(",", $_REQUEST["cols"], $this->num_fields); if (isset($_REQUEST["id"])){ $res = mysql_query("SELECT * FROM $this->table WHERE ".$this->idname." = '".$_REQUEST["id"]."'", $this->conn); $value = mysql_fetch_array($res); for ($j = 0; $j < ((isset($cols))?(count($cols)):($this->num_fields)); $j++) { $row[$j] = $value[((isset($cols))?($cols[$j]):($j))]; } $arr[0] = $row; $sqlidarr[0] = $value[$this->idname]; mysql_free_result($res); } else { if (isset($_REQUEST["start"])) $start = $_REQUEST["start"]; else $start = 0; if (isset($_REQUEST["end"])) $end = $_REQUEST["end"]; else $end= $this->num_rows; if ($start < 0) $start=0; if ($end > $this->num_rows) $end = $this->num_rows; if ($start < $this->num_rows) { mysql_data_seek($this->result, $start); for ($i = 0; $i < ($end-$start); $i++) { $value = mysql_fetch_array($this->result); for ($j = 0; $j < ((isset($cols))?(count($cols)):($this->num_fields)); $j++) { $row[$j] = $value[((isset($cols))?($cols[$j]):($j))]; //echo $row[$j]; } $arr[$i] = $row; $sqlidarr[$i] = $value[$this->idname]; } } } $result[0] = $sqlidarr; $result[1] = $arr; return(json_encode($result)); } private function view_bar(){ $id = $_REQUEST["id"]; $colname = $_REQUEST["colname"]; $w = $_REQUEST["w"]; $h = $_REQUEST["h"]; if (!isset($this->max)) $this->max = $this->MaxNumber($colname); $res = mysql_query("SELECT $colname FROM $this->table WHERE $this->idname='$id'", $this->conn) or die(mysql_error()); $data = mysql_fetch_array($res); $value = $data[0]; mysql_free_result($res); $im = imagecreatetruecolor ($w, $h) or die("Cannot Initialize new GD image stream"); imagealphablending($im, FALSE); imagesavealpha($im, TRUE); $bg = imagecolorallocatealpha($im, 255, 255, 255, 127); imagefill($im, 0, 0, $bg); $clr = imagecolorallocatealpha($im, 0, 0, 255, 60); $height = (int) ceil($h * ($value / $this->max)); imagefilledrectangle ($im, 0, $h-$height, $w, $h, $clr); Header("Content-type: image/png"); Imagepng($im); ImageDestroy($im); } private function view_circle(){ $id = $_REQUEST["id"]; $colname = $_REQUEST["colname"]; $w = $_REQUEST["w"]; if (!isset($this->max)) $this->max = $this->MaxNumber($colname); $res = mysql_query("SELECT $colname FROM $this->table WHERE $this->idname='$id'", $this->conn) or die(mysql_error()); $data = mysql_fetch_array($res); $value = $data[0]; mysql_free_result($res); $maxr = $w / 2; $maxopp = pi() * pow($maxr, 2); $opp = $maxopp * ($value / $this->max); $r = sqrt($opp / pi()); $width = $r*2; $im = imagecreatetruecolor ($w, $w) or die("Cannot Initialize new GD image stream"); imagealphablending($im, FALSE); imagesavealpha($im, TRUE); $bg = imagecolorallocatealpha($im, 255, 255, 255, 127); imagefill($im, 0, 0, $bg); $clr = imagecolorallocatealpha($im, 0, 0, 255, 60); imagefilledarc ($im, $maxr, $maxr, $width, $width, 0, 360, $clr, IMG_ARC_PIE); Header("Content-type: image/png"); Imagepng($im); ImageDestroy($im); } private function MaxNumber($colname) { $max = 0; mysql_data_seek($this->result, 0); for ($i=0; $i < $this->num_rows; $i++) { $row = mysql_fetch_array($this->result); $max = max($max, $row[$colname]); } return($max); } function addquotes($str) { return ("'".$str."'"); } } ?>