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32 lines
1.2 KiB
PHP
Executable file
32 lines
1.2 KiB
PHP
Executable file
<?php
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function clearDatabase(){ // Alle Fragen die keine Antworten besitzen werden gelöscht
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$sql="SELECT q_id FROM questions WHERE active='".intval(0)."'";
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$query = mysql_query($sql) OR die(mysql_error());
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while($q_id= mysql_fetch_array( $query,MYSQL_BOTH )){
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$q_id= $q_id['q_id'];
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$sql_number="SELECT a_id FROM answers WHERE q_id='".intval($q_id)."' ";
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$query_number = mysql_query( $sql_number);
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$menge=mysql_num_rows($query_number);
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if($menge ==0){
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$sql_del="DELETE FROM questions WHERE q_id='".intval($q_id)."'";
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$query_del = mysql_query($sql_del);
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// statistiken bereingien
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$sql_del_statistics="DELETE FROM statistics WHERE q_id='".intval($q_id)."'";
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$ok_statistics=mysql_query( $sql_del_statistics);
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// answers_incorrect bereinigen
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$sql_del_aIncorrect="DELETE FROM answers_incorrect WHERE q_id='".intval($q_id)."'";
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$ok_aIncorrect=mysql_query( $sql_del_aIncorrect);
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//Beschreibung löschen
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$sql_del_desc="DELETE FROM question_description WHERE q_id='".intval($q_id)."'";
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$ok_desc=mysql_query( $sql_del_desc);
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}
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}
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}
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?>
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