returning sql column names

[burgergetsbored]

Hey all I'm trying to do is echo out the column names from my sql table rather than the content. Everyone online seems to recommend mysql_fetch_field() but phps documentation say it's becoming deprecated now ? And other examples use quite a bit of code. Is there no simple way of doing this?

[Mko]

You could always just use mysqli_fetch_field().

Read more: http://php.net/manua...etch-fields.php

[burgergetsbored]

I've never used mysqli before, and all my current code is in sql or does that not matter ? I tried using

$query=mysql_query('SHOW COLUMNS FROM table ') or die(mysql_error());

while($field=mysql_fetch_object($query)){
$fields[]=$field;
};

print_r($fields);

foreach($fields as $key=>$field){
echo $field->Field.'</br>';

 

which worked for most of the columns but the first one produced a massive error

[Mko]

I've never used mysqli before, and all my current code is in sql or does that not matter ? I tried using

$query=mysql_query('SHOW COLUMNS FROM table ') or die(mysql_error());

while($field=mysql_fetch_object($query)){
$fields[]=$field;
};

print_r($fields);

foreach($fields as $key=>$field){
echo $field->Field.'</br>';

 

which worked for most of the columns but the first one produced a massive error

 

You'd need to change up some features of your code.

For connecting, use

$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

And for querying, use

$mysqli->query($query);

Most of the MySQL features are the same in MySQLi, but they just include the i in the function name.

Be sure to go to php.net to read up on the functionality of all the MySQLi functions, as not all of them are completely alike.

[burgergetsbored]

Ah okay then. So would there be no way of doing it in just SQL then?

[Mko]

Ah okay then. So would there be no way of doing it in just SQL then?

You can always opt for using MySQL, but it has become depreciated.

[burgergetsbored]

I'd rather use SQL as this is the only bit I'm struggling with and all the rest works okay for this small project! But if there's no real easy way then that may become a problem.

[Mko]

I'd rather use SQL as this is the only bit I'm struggling with and all the rest works okay for this small project! But if there's no real easy way then that may become a problem.

Is your issue that mysql_fetch_field() is depreciated so you're getting a warning or do you have another error?

[Barand]

An easy way is to use xxxxx_fetch_assoc the get the array keys. There's an example here

 

http://forums.phpfreaks.com/topic/274059-select-from-tablea-where-1/?do=findComment&comment=1410285

[Jessica]

I'd rather use SQL as this is the only bit I'm struggling with and all the rest works okay for this small project! But if there's no real easy way then that may become a problem.

 

SQL = server query language

MySQL = a specific database that uses a specific dialect of SQL.

Mysqli = the improved mysql interface for PHP.

 

You are using SQL no matter what. If you want to use mysqli functions you have to change all of your mysql_ functions to mysql_, and the manual documents the functions. But if you were doing that you might as well switch to PDO.

 

You don't need to switch in order to get your column names. You should switch if this is new code you're writing now.

[Barand]

SQL = server query language

 

Erm... Structured Query Language

[Jessica]

Yeah I have no idea why I said server. Lol!! Thanks Barand