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How to alter table with php

Posted on 2007-11-29
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Last Modified: 2013-12-12
What's wrong with this:

$profilename = 'photographers';
$name = 'Gender';
$type = 'varchr(255)';

$result = mysql_query("ALTER TABLE '$profilename' ADD COLUMN '$name' '$type'") or die(mysql_error());

It says:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''' ADD COLUMN 'Gender' 'varchar(255)'' at line 1
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Question by:jtcy
6 Comments
 
LVL 20

Expert Comment

by:steelseth12
ID: 20372906

$profilename = 'photographers';
$name = 'Gender';
$type = 'varchar(255)';
 
$result = mysql_query("ALTER TABLE `$profilename` ADD COLUMN `$name` $type") or die(mysql_error());

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LVL 20

Accepted Solution

by:
steelseth12 earned 1400 total points
ID: 20372913
use backticks `` on entities (tables, columns) not single columns '
Also the datatype is varchar not varchr
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Author Comment

by:jtcy
ID: 20372980
Whats wrong with this:

$result = mysql_query("INSERT INTO profile_fields (`id`, `name`, `profile_id`, `type_id`, `order`) VALUE
  ('0', '$name', '$profileid', '$type', '$order'") or die(mysql_error());
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LVL 27

Expert Comment

by:Cornelia Yoder
ID: 20372981
I don't think you need the ticks, just fix the varchr/varchar problem.

$type = 'varchar(255)';
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LVL 3

Assisted Solution

by:BioI
BioI earned 600 total points
ID: 20373014
the problem with your insert-statement is that mix up your parentheses and quotes
copy-past this line:


$result = mysql_query("INSERT INTO profile_fields (`id`, `name`, `profile_id`, `type_id`, `order`) VALUES  ('0', '$name', '$profileid', '$type', '$order')") or die(mysql_error());

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LVL 20

Assisted Solution

by:steelseth12
steelseth12 earned 1400 total points
ID: 20373109
You should use backtcks especially when executing alter statements dynamically ...

for example if you use

$name = 'sort'; which is a reserved word it will fail without the backticks.

on this query

$result = mysql_query("INSERT INTO profile_fields (`id`, `name`, `profile_id`, `type_id`, `order`) VALUE
  ('0', '$name', '$profileid', '$type', '$order'") or die(mysql_error());

as BioI suggested above you are missing a closing ) and using value instead of values

Also if your id field is autoincremented PK then you should use

$result = mysql_query("INSERT INTO profile_fields (`name`, `profile_id`, `type_id`, `order`) VALUES
  ('$name', '$profileid', '$type', '$order')") or die(mysql_error());

 
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