Upload files to 'html'

2018-06-30 10:47:13 +02:00
parent 05adf06434
commit 9a8d595938
5 changed files with 728 additions and 0 deletions
--- a/html/db.php
+++ b/html/db.php
@@ -0,0 +1,155 @@
+<?php
+
+  /*
+   * Klasse für Datenbankverbindungen
+   * mit der Bibliothek d3js.org
+   * Die Daten werden aus einer Datenbank gelesen
+   *
+   * * Tabelle:  kurse (id*, datum, Waehrung, kurs)
+   *
+   *
+   * April 2017
+   */
+
+
+class DB {
+    private $connected = false;
+    private $hostname = "localhost";      // anpassen
+    private $username = "username";       // anpassen
+    private $password = "password";       // anpassen
+    private $db       = "wechselkurse";   // anpassen
+    
+    function __construct($db, $u, $pw) {
+        $this->db = $db;
+        $this->username = $u;
+        $this->password = $pw;
+    }
+    
+    
+    function getDBName() {
+        return $this->dbname;
+    }
+    
+    // Liefert ein Array.
+    // Jeder Eintrag stelt eine Datenzeile dar, die ein assoziatives Array ist.
+    function get_Query($sql) {
+        try {
+            $dbh = new PDO("mysql:host=" . $this->hostname.";dbname=".$this->db, $this->username, $this->password);
+            $statement = $dbh->prepare($sql);
+            $statement->execute(); 
+            $dbh = null;   // ** close the database connection *** /
+        }
+        catch(PDOException $e) {
+            echo $e->getMessage();
+        }
+        return $statement->fetchAll(PDO::FETCH_ASSOC);        
+    }
+    
+    // liefert Abfrage im JSON-Format 
+    function getJSON_Data($sql) {
+        $result = $this->get_Query($sql);
+        $json_data = json_encode($result);
+        return  $json_data;
+    }
+    
+    
+    function getQueryAsHTMLDropDownBox($sql, $link, $default, $dropdownName) {
+        $result = $this->get_Query($sql);
+        $html = "";
+        if ($result != null) {
+            $html .= "<select name='$dropdownName'  onchange=\"window.open(this.options[this.selectedIndex].value,'_top')\" >\n";
+            foreach ($result as $i => $value) {
+                $row = $result[$i];         // Ein Datensatz (Hasharray)
+                $k = array_values($row)[0]; // Wert ist immer in Spalte 0
+                if ( $k == $default ) { $sel="selected"; }
+                else                      { $sel=""; }
+                $html .= "  <option VALUE='$link$k' $sel>$k</option>\n";
+            }
+            $html .= "</select>\n";
+            return $html;
+        }
+        else {
+            return "Error beim erstellen der Dropdown-Box.";
+        }   
+    }
+    
+
+    function getQueryAsTEXTTable($sql,$format) {
+        $result = $this->get_Query($sql);
+        $html  = "<div style='border:1px solid gray;padding 10px; width:350px;'>\n";
+        $html .= "<pre style='padding-left:10px;'>\n";
+        if ($result != null) {
+            foreach($result as $zeile) {
+                $html .= vsprintf($format, $zeile) . "\n";
+            }
+            $html .= "</pre>\n";
+            $html .= "</div>\n";
+        }
+        else $html = "error";
+        return $html;
+    }
+    
+    
+    
+    function getQueryAsHTMLTable($sql) {
+        $result = $this->get_Query($sql);
+        $styleHeader   = "style='background-color: #4D72D6; color:white;'";
+        $styleRowLow   = "style='background-color:white;'";
+        $styleRowHigh  = "style='background-color:#E1EFF5;'";
+        
+        if ($result != null) {
+            $html  = "<table style='border: 1px solid gray; padding:2'>\n";
+            // Tasbellenüberschrift
+            $zeile = $result[0];
+            $html .= "<tr $styleHeader>";
+            foreach($zeile as $k => $v) {
+                $html .= "<td>$k</td>" ;
+            }
+            $html .= "</tr>\n";
+            
+            // Tabelleninhalt
+            $high = false;
+            foreach($result as $zeile) {
+                if ($high)  { $st = $styleRowHigh; $high=false; }  
+                else        { $st = $styleRowLow;  $high=true; }
+                $html .= "<tr $st>";
+                foreach($zeile as $k => $v) {
+                    $html .= "<td>$v</td>" ;
+                }
+                $html .= "</tr>\n";
+            }
+            $html .= "</table>\n";
+        }
+        else $html = "error";
+        return $html;
+    }
+    
+    
+}
+
+/*
+ * ------------------------------------------------------
+ * Testder Methoden
+ * ------------------------------------------------------
+$db = new DB("euro","dollar","wechselkurse");
+
+echo "Datenbank   " . $db->getDBName() . "\n";
+
+echo "JSON \n";
+echo $db->getJSON_Data("SELECT * from kurse LIMIT 2;") . "\n";
+
+echo "PDO \n";
+//print_r ( $db->get_Query("SELECT * from kurse LIMIT 2;") );
+
+echo "getQueryAsDropDownBox \n";
+//print_r ($db->getQueryAsHTMLDropDownBox("SELECT DISTINCT(waehrung) from kurse ORDER BY waehrung", "https://server.de/show.php?waehrung=", "JPY", "myDDF") );
+
+echo "getQueryAsTEXTTable \n";
+//print_r ($db->getQueryAsTEXTTable("SELECT * from kurse LIMIT 4","%-4s %-12s %-5s %10f") );
+
+echo "getQueryAsHTMLTable \n";
+print_r ($db->getQueryAsHTMLTable("SELECT * from kurse LIMIT 4") );
+*/
+
+
+?>