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234 lines
12 KiB
HTML
234 lines
12 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html>
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<head>
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<title>mysql_fetch_field</title>
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<link rel="stylesheet" type="text/css" href="../../src/self.css">
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<meta name="description" content="Stellt ein Objekt mit Feldinformationen bereit">
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<meta name="keywords" content="SELFPHP, PHP, MySQL-Funktionen, mysql_fetch_field">
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<meta name="author" content="Damir Enseleit, mail@selfphp.info">
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<meta name="DC.Contributer" content="Matthias Hupp, m.hupp@selfphp3.de">
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<meta name="DC.Publisher" content="Damir Enseleit, mail@selfphp.info">
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<meta name="DC.Date" content="2001-08-20T12:18+01:00">
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<meta name="DC.Identifier" content="http://www.selfphp3.de/funktionsreferenz/mysql_funktionen/mysql_fetch_field.html">
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<meta name="DC.Language" content="de">
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<meta name="DC.Rights" content="../../editorial/index.html">
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<meta name="SELF.Firstdate" content="2001-08-20T12:18+01:00">
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<meta name="SELF.Version" content="1">
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<meta name="SELF.Pagetype" content="Information">
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<meta name="SELF.Path" content="SELFPHP == ../../index.php // Funktionsreferenz == ../index.php // MySQL-Funktionen == index.html">
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</head>
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<body bgcolor="#FFFFFF" text="#000000" link="#AA5522" vlink="#772200" alink="#000000">
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<table cellpadding="4" cellspacing="0" border="0" width="100%">
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<tr>
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<td bgcolor="#FFEEDD" class="nav"><a class="an" name="top"><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>Funktionsreferenz</b></a> <img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von"> <a href="index.html"><b>MySQL-Funktionen</b></a></td>
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</tr>
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</table>
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<table cellpadding="4" cellspacing="0" border="0" width="100%">
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<tr>
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<td bgcolor="#EEEEEE" class="doc" width="110"><img src="../../src/logo.gif" width="106" height="109" border="0" alt="SEL.html"></td>
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<td bgcolor="#EEEEEE" class="doc" valign="bottom" width="100%">
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<h2>mysql_fetch_field</h2></td>
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</tr>
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<tr>
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<td bgcolor="#EEEEEE" class="doc" valign="top" align="center"> <img src="../../src/dokx.gif" width="30" height="20" vspace="6" border="0" alt="Informationsseite">
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</td>
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<td bgcolor="#FFFFFF" valign="top" nowrap colspan="2">
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<p> <img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten"> <a href="#befehl"><b>Befehl</b></a><br>
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<img src="../../src/down.gif" width="14" height="10" border="0" alt="nach unten"> <a href="#version"><b>Version</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="#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="#ausgabe"><b>Ausgabe</b></a><br>
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</p>
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</td>
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</tr>
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<tr>
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<td colspan=3 bgcolor="#EEEEEE" class="doc"><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 class="an" name="befehl">Befehl</a></h2>
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<table width="100%" cellpadding=10><tr>
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<td class="xmpcode" bgcolor="#E4EEFF">object <b>mysql_fetch_field</b>(int
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Ergebnis-Kennung [, int Feld-Offset])</td>
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</tr></table>
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<p> </p>
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<table bgcolor="#EEEEEE" class="doc" width="100%"><tr><td>
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<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> 
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</td></tr></table>
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<h2 class="Sh2"><a class="an" name="version">Version</a></h2>
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<table width="100%" cellpadding=10 height="32">
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<tr>
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<td class="xmpcode" bgcolor="#E4EEFF" height="20">
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<p>PHP 3, PHP 4 >= 4.0b1</p>
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</td>
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</tr></table>
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<p> </p>
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<table bgcolor="#EEEEEE" class="doc" width="100%"><tr><td>
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<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> 
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</td></tr></table>
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<h2 class="Sh2"><a class="an" name="beschreibung">Beschreibung</a></h2>
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<table width="100%" cellpadding=10 height="240">
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<tr>
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<td class="xmpcode" bgcolor="#E4EEFF" height="57">
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<p>Mit mysql_fetch_field() kann man sich anhand einer Ergebnis-Kennung<br>
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(Ergebnis-Kennung) ein Objekt mit Feldinformationen aus einem<br>
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Anfrageergebnis zurückgeben lassen. Gibt man den optionalen Parameter
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Feld-<br>
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Offset nicht an, so werden die Informationen des nächsten Feldes
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geliefert, das<br>
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noch nicht mit mysql_fetch_field() ausgegeben wurde.</p>
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<p>Die Eigenschaften des Objekts sind folgende: <br>
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name - Feldname innerhalb der Tabelle <br>
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table - Name der Tabelle, zu der das Feld gehört <br>
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max_length - max. Länge des Feldes <br>
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not_null - 1, das Feld kann nicht Null sein <br>
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primary_key - 1, das Feld ist ein Primärschlüssel<br>
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unique_key - 1, das Feld ist ein eindeutiger Schlüssel<br>
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multiple_key - 1, das Feld ist ein nicht eindeutiger Schlüssel<br>
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numeric - 1, das Feld ist vom Typ "numeric"<br>
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blob - 1, das Feld ist vom Typ "BLOB"<br>
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type - der Feld-Typ <br>
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unsigned - 1, das Feld ist vorzeichenlos<br>
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zerofill - 1, das Feld ist "zero-filled"</p>
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<p>Siehe auch:</p>
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<ul>
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<li><a href="mysql_field_seek.html">mysql_field_seek()</a></li>
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</ul>
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</td>
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</tr></table>
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<p> </p>
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<table bgcolor="#EEEEEE" class="doc" width="100%"><tr><td>
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<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> 
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</td></tr></table>
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<h2 class="Sh2"><a class="an" name="beispiel">Beispiel</a></h2>
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<table width="100%" cellpadding=10 height="66">
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<tr>
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<td class="xmpcode" bgcolor="#E4EEFF">
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<p>/*<b><br>
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</b><b>Datenbank:</b> </p>
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<table border="0" bgcolor=A6A6A6>
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<tr bgcolor=CCCCCC>
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<td align=center colspan="4"><b>Tabelle selfphp_funktionen</b></td>
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</tr>
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<tr>
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<td align=center><b>id</b></td>
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<td align=center><b>gruppe</b></td>
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<td align=center><b>befehl</b></td>
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<td align=center><b>version</b></td>
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</tr>
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<tr bgcolor=DDDDDD>
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<td>1</td>
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<td>Array-Funktionen</td>
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<td>array_count_values</td>
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<td>(PHP 4 >= 4.0b4)</td>
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</tr>
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<tr bgcolor=CCCCCC>
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<td>2</td>
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<td>Variablen-Funktionen</td>
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<td>is_double</td>
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<td>(PHP 3 )</td>
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</tr>
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<tr bgcolor=DDDDDD>
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<td>3</td>
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<td>Verzeichnis-Funktionen</td>
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<td>chdir</td>
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<td>(PHP 3, PHP 4 )</td>
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</tr>
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</table>
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<p>*/</p>
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<pre>
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<?PHP
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/* Datenbankserver - In der Regel die IP */<br> $db_server = "localhost";</pre>
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<pre>/* Datenbankname */
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$db_name = "selfphp";</pre>
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<pre>/* Datenbankuser */
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$db_user = "root";</pre>
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<pre>/* Datenbankpasswort */
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$db_passwort = "mega";
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/* Erstellt Connect zu Datenbank her */<br> $db = @MYSQL_CONNECT($db_server,$db_user,$db_passwort);<br> <br> mysql_select_db("selfphp",$db); <br> $result = mysql_query("SELECT version FROM selfphp_funktionen WHERE id = '1'" ); <br> $row = mysql_fetch_row($result); <br> for($x=0; $x<count($row); $x++) { <br> $str = mysql_fetch_field($result,$x); <br> echo "name: " . $str -> name . "<br>"; <br> echo "table: " . $str -> table . "<br>"; <br> echo "max_length: " . $str -> max_length . "<br>"; <br> echo "not_null: " . $str -> not_null . "<br>"; <br> echo "primary_key: " . $str -> primary_key . "<br>";<br> echo "unique_key: " . $str -> unique_key . "<br>"; <br> echo "multiple_key" . $str -> multiple_key . "<br>";<br> echo "numeric: " . $str -> numeric . "<br>"; <br> echo "blob: " . $str -> blob . "<br>"; <br> echo "type: " . $str -> type . "<br>"; <br> echo "unsigned: " . $str -> unsigned . "<br>";<br> echo "zerofill: " . $str -> zerofill;<br> }
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?></pre>
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</td>
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</tr></table>
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<p> </p>
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<table bgcolor="#EEEEEE" class="doc" width="100%"><tr><td>
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<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> 
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</td></tr></table>
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<h2 class="Sh2"><a class="an" name="ausgabe">Ausgabe</a></h2>
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<table width="100%" cellpadding=10 height="45">
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<tr>
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<td class="xmpcode" bgcolor="#E4EEFF" height="57">
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<p>name: version<br>
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table: selfphp_funktionen<br>
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max_length: 16<br>
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not_null: 0<br>
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primary_key: 0<br>
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unique_key: 0<br>
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multiple_key0<br>
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numeric: 0<br>
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blob: 0<br>
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type: string<br>
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unsigned: 0<br>
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zerofill: 0</p>
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<p></p>
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<p></p>
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</td>
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</tr></table>
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<p> </p>
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<table cellpadding="4" cellspacing="0" border="0" width="100%">
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<tr><td colspan=2 bgcolor="#EEEEEE" class="doc">
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<a href="#top"><img src="../../src/up.gif" width="14" height="10" border="0" alt="nach oben"></a>
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</td></tr>
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<tr>
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<td bgcolor="#EEEEEE" class="doc" align="right" width="110">weiter:<a href="mysql_fetch_lengths.html"><img src="../../src/next.gif" width="10" height="10" border="0" hspace="10" alt="weiter"></a></td>
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<td bgcolor="#FFFFFF"><img src="../../src/dok.gif" width="15" height="10" border="0" alt="Seite">
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<a href="mysql_fetch_lengths.html"><b>mysql_fetch_lengths</b></a> </td>
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</tr>
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<tr>
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<td bgcolor="#EEEEEE" class="doc" align="right" width="110">zurück:<a href="mysql_fetch_array.html"><img src="../../src/prev.gif" width="10" height="10" border="0" hspace="10" alt="zurück"></a></td>
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<td bgcolor="#FFFFFF" width="100%"><img src="../../src/dok.gif" width="15" height="10" border="0" alt="Seite">
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<a href="mysql_fetch_array.html"><b>mysql_fetch_array</b></a> </td>
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</tr>
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<tr><td colspan=2 bgcolor="#EEEEEE" class="doc"> </td></tr>
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</table><table cellpadding="4" cellspacing="0" border="0" width="100%">
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<tr>
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<td bgcolor="#FFEEDD" class="nav"><a class="an" name="bottom"><img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von"></a>
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<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">
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<a href="../index.html"><b>Funktionsreferenz</b></a> <img src="../../src/refkap.gif" width="16" height="13" border="0" alt="Teil von">
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<a href="index.html"><b>MySQL-Funktionen</b></a></td>
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</tr>
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</table>
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<p><a class="an" name="bottom">© 2001, 2002, 2003</A> <img src="../../src/mail.gif" width="15" height="10" border="0" alt="E-Mail"> <a href="mailto:mail@selfphp.info">Damir Enseleit, mail@selfphp.info</a></p>
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</body>
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</html>
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