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Server Development
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PHP Adding +1 to a field
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<blockquote data-quote="JayC" data-source="post: 429382" data-attributes="member: 36373"><p>Try This:</p><p>[CODE]$engine->query("UPDATE `users` SET `refs` = `refs` + 1 WHERE `username` = '". $template->form->reg_referrer . "' LIMIT 1");[/CODE]</p><p></p><p>Things to verify:</p><p>Column name is spelled "refs"</p><p>Default value for "refs" is 0 - If it is null , or empty, it will NOT add 1, it will just return null / empty. It should be an int size 11 field with the default of 0.</p><p></p><p>Limiting an update query shouldn't affect how the update executes -- Username is an unique field, so it should still be updating his account.</p><p></p><p></p><p><strong>EDIT: If I was coding this, I would code it like this:</strong></p><p>[CODE]</p><p>function verifyReferrer($ref){</p><p> $ref = filter($ref);</p><p> if($this->nameTaken($ref)){</p><p> $result = $mysqli->query("SELECT null FROM users WHERE `ip_last` = '". $_SERVER['REMOTE_ADDR']."'");</p><p> if(mysqli_num_rows($result) == 0){</p><p> return true;</p><p> }else{</p><p> $template->form->error = 'You may not refer this person.';</p><p> return false;</p><p> }</p><p> }else{</p><p> $template->form->error = 'The referrer does not exist.';</p><p> return false;</p><p> }</p><p>}</p><p>[/CODE]</p><p><strong>Inside Register Function:</strong></p><p>[CODE]</p><p>if(verifyReferrer($template->form->reg_referrer)){</p><p> $engine->query("UPDATE `users` SET `refs` = `refs` + 1 WHERE `username` = '". $template->form->reg_referrer . "' LIMIT 1");</p><p>}else{</p><p> return;</p><p>}[/CODE]</p></blockquote><p></p>
[QUOTE="JayC, post: 429382, member: 36373"] Try This: [CODE]$engine->query("UPDATE `users` SET `refs` = `refs` + 1 WHERE `username` = '". $template->form->reg_referrer . "' LIMIT 1");[/CODE] Things to verify: Column name is spelled "refs" Default value for "refs" is 0 - If it is null , or empty, it will NOT add 1, it will just return null / empty. It should be an int size 11 field with the default of 0. Limiting an update query shouldn't affect how the update executes -- Username is an unique field, so it should still be updating his account. [B]EDIT: If I was coding this, I would code it like this:[/B] [CODE] function verifyReferrer($ref){ $ref = filter($ref); if($this->nameTaken($ref)){ $result = $mysqli->query("SELECT null FROM users WHERE `ip_last` = '". $_SERVER['REMOTE_ADDR']."'"); if(mysqli_num_rows($result) == 0){ return true; }else{ $template->form->error = 'You may not refer this person.'; return false; } }else{ $template->form->error = 'The referrer does not exist.'; return false; } } [/CODE] [B]Inside Register Function:[/B] [CODE] if(verifyReferrer($template->form->reg_referrer)){ $engine->query("UPDATE `users` SET `refs` = `refs` + 1 WHERE `username` = '". $template->form->reg_referrer . "' LIMIT 1"); }else{ return; }[/CODE] [/QUOTE]
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PHP Adding +1 to a field
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