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<title>Auslesen der Gesamtgr<67><72>e einer MySQL Datenbank Tabelle</title>
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<meta name="author" content="Damir Enseleit, mail@selfphp3.de">
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<meta name="DC.Date" content="2003-07-17T16:53:59+02:00">
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<td bgcolor="#FFEEDD" colspan="3" class="nav"><a name="top" class="an"><img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von"></a> <a href="../../index.html"><b>SELFPHP</b></a>/<a href="../../navigation/index.html">Navigationshilfen</a> <img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von"> <a href="../index.html"><b>Tipps & Tricks</b></a> <img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von"> <a href="index.html"><b>MySQL</b></a></td>
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<td bgcolor="#EEEEEE" valign="bottom" class="doc"><h2>Auslesen der Gesamtgröße einer MySQL Datenbank Tabelle</h2></td>
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<td bgcolor="#EEEEEE" align="right" valign="bottom" class="doc"> </td>
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<td bgcolor="#EEEEEE" align="center" valign="top" class="doc"><img src="../../src/dokx.gif" width="30" height="20" border="0" alt="Informationsseite" /></td>
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<td bgcolor="#FFFFFF" valign="top" nowrap colspan="2"><img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten" /> <a href="#autor"><b>Autor</b></a><br />
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<img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten"> <a href="#beispiel"><b>Beispiel</b></a><br />
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<img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten"> <a href="#beschreibung"><b>Beschreibung</b></a><br />
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<img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten"> <a href="#fazit"><b>Fazit</b></a><br />
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<h2 class="Sh2"><a name="autor" class="an">Autor</a></h2>
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<table width="100%" cellpadding="10">
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<tr>
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<td bgcolor="#E4EEFF" class="xmpcode"><b>Name:</b> Daniel Kressler<br /><b>Email:</b> <a href="mailto:d.kressler@selfphp.info">d.kressler@selfphp.info</a><br /><b>Website:</b> <a href="http://www.selfphp.info" target="_blank">http://www.selfphp.info</a></td>
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<br /><br />
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<table width="100%" class="doc">
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<tr>
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<td><a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben" /></a><a href="#bottom"><img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten" /></a></td>
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</tr>
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</table>
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<h2 class="Sh2"><a name="beispiel" class="an">Beispiel</a></h2>
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<table width="100%" cellpadding="10">
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<tr>
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<td bgcolor="#E4EEFF" class="xmpcode"><code><font color="#000000">
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<font color="#0000BB"><?
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<br /></font><font color="#FF8000">//MySQL Server oder Host
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<br /></font><font color="#0000BB">$db_serv </font><font color="#007700">= </font><font color="#DD0000">'localhost'</font><font color="#007700">;
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<br />
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<br /></font><font color="#FF8000">// MySQL Datenbank Name
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<br /></font><font color="#0000BB">$db_name </font><font color="#007700">= </font><font color="#DD0000">'db'</font><font color="#007700">;
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<br />
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<br /></font><font color="#FF8000">// User
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<br /></font><font color="#0000BB">$db_user </font><font color="#007700">= </font><font color="#DD0000">'user'</font><font color="#007700">;
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<br />
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<br /></font><font color="#FF8000">// Passwort
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<br /></font><font color="#0000BB">$db_pass </font><font color="#007700">= </font><font color="#DD0000">'pass'</font><font color="#007700">;
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<br />
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<br /></font><font color="#FF8000">// Verbindung zum MySQL Server herstellen
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<br /></font><font color="#0000BB">$db </font><font color="#007700">= </font><font color="#0000BB">mysql_connect</font><font color="#007700">(</font><font color="#0000BB">$db_serv</font><font color="#007700">, </font><font color="#0000BB">$db_user</font><font color="#007700">, </font><font color="#0000BB">$db_pass</font><font color="#007700">) or die(</font><font color="#DD0000">'ERROR!'</font><font color="#007700">);
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<br />
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<br /></font><font color="#FF8000">// MySQL Datenbank w<>hlen
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<br /></font><font color="#0000BB">mysql_select_db</font><font color="#007700">(</font><font color="#0000BB">$db_name</font><font color="#007700">, </font><font color="#0000BB">$db</font><font color="#007700">) or die(</font><font color="#DD0000">'ERROR!'</font><font color="#007700">);
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<br />
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<br /></font><font color="#FF8000">// MySQL Query mit der Syntax zum auslesen der Informationen einer
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<br />// gew<65>hlten MySQL Datenbank Tabelle
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<br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">mysql_query</font><font color="#007700">(</font><font color="#DD0000">"SHOW TABLE STATUS FROM $db_name LIKE 'tabelle'"</font><font color="#007700">);
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<br />
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<br /></font><font color="#FF8000">// MySQL Query Daten an ein indiziertes Array <20>bergeben
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<br /></font><font color="#0000BB">$data </font><font color="#007700">= </font><font color="#0000BB">mysql_fetch_row</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);
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<br />
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<br /></font><font color="#FF8000">// Ausrechnen der Gesamtgr<67><72>e einer MySQL Datenbank Tabelle (in Byte!)
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<br /></font><font color="#0000BB">$space </font><font color="#007700">= </font><font color="#0000BB">$data</font><font color="#007700">[</font><font color="#0000BB">5</font><font color="#007700">] + </font><font color="#0000BB">$data</font><font color="#007700">[</font><font color="#0000BB">7</font><font color="#007700">];
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<br />
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<br /></font><font color="#FF8000">// Ausgabe der Gesamtgr<67><72>e in Byte
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<br /></font><font color="#007700">print </font><font color="#0000BB">$space</font><font color="#007700">.</font><font color="#DD0000">' BYTE<br />'</font><font color="#007700">;
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<br />
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<br /></font><font color="#FF8000">// Umrechnung der Gesamtgr<67><72>e in Kilobyte
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<br /></font><font color="#0000BB">$space </font><font color="#007700">= </font><font color="#0000BB">$space </font><font color="#007700">/ </font><font color="#0000BB">1024</font><font color="#007700">;
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<br />
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<br /></font><font color="#FF8000">// Ausgabe der Gesamtgr<67><72>e in Kilobyte
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<br /></font><font color="#007700">print </font><font color="#0000BB">$space</font><font color="#007700">.</font><font color="#DD0000">' KB<br />'</font><font color="#007700">;
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<br />
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<br /></font><font color="#FF8000">// Umrechnung der Gesamtgr<67><72>e in Megebyte
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<br /></font><font color="#0000BB">$space </font><font color="#007700">= </font><font color="#0000BB">$space </font><font color="#007700">/ </font><font color="#0000BB">1024</font><font color="#007700">;
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<br />
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<br /></font><font color="#FF8000">// Ausgabe der Gesamtgr<67><72>e in Megabyte
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<br /></font><font color="#007700">print </font><font color="#0000BB">$space</font><font color="#007700">.</font><font color="#DD0000">' MB'</font><font color="#007700">;
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<br /></font><font color="#0000BB">?>
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<br /></font>
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</font>
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</code></td>
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</tr>
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</table>
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<br /><br />
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<table width="100%" class="doc">
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<tr>
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<td><a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben" /></a><a href="#bottom"><img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten" /></a></td>
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</tr>
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</table>
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<h2 class="Sh2"><a name="beschreibung" class="an">Beschreibung</a></h2>
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<table width="100%" cellpadding="10">
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<tr>
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<td bgcolor="#E4EEFF" class="xmpcode">Das Script führt eine Abfrage über die Informationen der MySQL Datenbank Tabelle aus. Nachdem die<br />Ergebnis-Kennung mit der Funktion mysql_fetch_row() an ein indiziertes Array übergeben wurde, werden<br />die Informationen <20>ber die Größe der MySQL Datenbank Tabelle aus Tabellen Daten ($data[5]) und<br />Tabellen Index ($data[7]) errechnet. Als Ergebnis erhält man die Gesamtgröße in Byte, welche das<br />Script dann noch in Kilobyte und Megabyte umrechnet. Die Ausgabe <20>ber die Gesamtgröße der MySQL<br />Datenbank Tabelle wird demnach in Byte, Kilobyte und Megabyte gemacht.</td>
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</tr>
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</table>
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<br /><br />
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<table width="100%" class="doc">
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<tr>
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<td><a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben" /></a><a href="#bottom"><img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten" /></a></td>
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</tr>
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</table>
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<h2 class="Sh2"><a name="fazit" class="an">Fazit</a></h2>
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<table width="100%" cellpadding="10">
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<tr>
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<td bgcolor="#E4EEFF" class="xmpcode">Das aufgeführte Beispiel zeigt, wie man eine Status-Abfrage einer MySQL Datenbank Tabelle realisiert und sinnvoll nutzt.</td>
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</tr>
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</table>
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<br /><br />
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<table width="100%" class="doc">
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<tr>
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<td><a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben" /></a><a href="#bottom"><img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten" /></a></td>
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</tr>
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</table>
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<h2 class="Sh2"><a name="download" class="an">Download</a></h2>
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<table width="100%" cellpadding="10">
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<tr>
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<td bgcolor="#E4EEFF" class="xmpcode">Der Download beeinhaltet folgende Dateien:<ul>
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<li>mysql_db_tbl_size.php</li>
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<li>mysql_db_tbl_size_erklaerung.txt</li>
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<li>README.TXT</li>
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</ul><a href="mysql_db_tbl_size.zip">Download starten</a></td>
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</tr>
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</table>
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<br /><br />
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<table width="100%" border="0" cellspacing="0" cellpadding="4">
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<tr>
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<td colspan="3" class="doc"><a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben"></a></td>
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<td width="11%" align="right" class="doc">weiter:<a href="../index.html"><img src="../../src/next.gif" width="10" height="10" border="0" hspace="10" alt="weiter"></a></td>
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<td colspan="2"><img src="../../src/dok.gif" width="15" height="10" border="0" alt="Seite"> <a href="../index.html"><b>Tipps & Tricks</b></a></td>
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<td align="right" class="doc">zurück:<a href="index.html"><img src="../../src/prev.gif" width="10" height="10" border="0" hspace="10" alt="zurück"></a></td>
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<td colspan="2"><img src="../../src/dok.gif" width="15" height="10" border="0" alt="Seite"> <a href="index.html"><b>MySQL</b></a></td>
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<td colspan="3" class="doc"> </td>
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<td bgcolor="#FFEEDD" colspan="3" class="nav"><a name="bottom" class="an"><img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von"></a> <a href="../../index.html"><b>SELFPHP</b></a>/<a href="../../navigation/index.html">Navigationshilfen</a> <img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von"> <a href="../index.html"><b>Tipps & Tricks</b></a> <img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von"> <a href="index.html"><b>MySQL</b></a></td>
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<td colspan="3"><a name="bottom" class="an"><br>
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© 2001, 2002, 2003</a> <img src="../../src/mail.gif" width="15" height="10" border="0" alt="E-Mail">
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<a href="mailto:mail@selfphp.com">Damir Enseleit, mail@selfphp.com</a> , <a href="http://www.selfphp.info/impressum.php">Impressum</a></td>
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