Tip of the Day!

[kevindougans]

For anyone still using the old "mysql_fetch_assoc" here is something I've just discovered today after about 9 years of PHP'ing and thought I should sahre because I've not seen many open source projects use it (maybe for another reason I'm not yet aware of)...

(note: both provide the exact same output)

if ($no_of_records > 0) {
    $overhead_info = mysql_fetch_assoc($sql_result);
    extract($overhead_info);
}
echo "$rid, $type, $summary, $details, $cost, $purchase_date";


############  instead of  ###############


if ($no_of_types > 0) {
	while ($overhead_type_info = mysql_fetch_assoc($sql_result))
	{
		$rid = $overhead_type_info['row'];
		$type = $overhead_type_info['type'];
		$summary  = $overhead_type_info['summary'];
		$details  = $overhead_type_info['details'];
		$cost  = $overhead_type_info['cost'];
		$purchase_date = $overhead_type_info['purchase_date'];
	}
	echo "$rid, $type, $summary, $details, $cost, $purchase_date";
}

[urtrivedi]

You can not do anything without loop.
Correct code is as follows

if ($no_of_types > 0) {
	while ($overhead_type_info = mysql_fetch_assoc($sql_result))
	{
		extract($overhead_type_info);
		echo "<br>$rid, $type, $summary, $details, $cost, $purchase_date";
	}

}

[kevindougans]

there is no problem with the code if you are only trying to extract the first result or only 1 result. this post was a tip... not a problem :-)

[urtrivedi]

(note: both provide the exact same output)

I posted because of above quote and just to save newbies from confusion.

[kevindougans]

I posted because of above quote and just to save newbies from confusion.

if there was an edit button i'd ammend it to say "provides exact same output if there's only 1 result". i got too excited and assumed most people would have known what iw as talking about haha

[logonchristy]

hi kevindougans its nice... Really its useful one...

thanx...

[pbcomput]

For anyone still using the old "mysql_fetch_assoc" here is something I've just discovered today after about 9 years of PHP'ing and thought I should sahre because I've not seen many open source projects use it (maybe for another reason I'm not yet aware of)...

(note: both provide the exact same output)

if ($no_of_records > 0) {
    $overhead_info = mysql_fetch_assoc($sql_result);
    extract($overhead_info);
}
echo "$rid, $type, $summary, $details, $cost, $purchase_date";


############  instead of  ###############


if ($no_of_types > 0) {
	while ($overhead_type_info = mysql_fetch_assoc($sql_result))
	{
		$rid = $overhead_type_info['row'];
		$type = $overhead_type_info['type'];
		$summary  = $overhead_type_info['summary'];
		$details  = $overhead_type_info['details'];
		$cost  = $overhead_type_info['cost'];
		$purchase_date = $overhead_type_info['purchase_date'];
	}
	echo "$rid, $type, $summary, $details, $cost, $purchase_date";
}

Grt.....:cool: Thanks for such info....:)

One more thing i want to share that i also tried this wid

mysql_fatch_array()

wel no dought its also working wid this also...:icon_biggrin:

n i already starting to use this one.....:icon_biggrin::icon_cool:

[OS_dev]

I guess what I don't understand is why would someone break up an array into other variables? you already have values in the array. I mean it's cool to know and I didn't even know it existed, I think because I've just never needed it.

Unless, I am working with preexisting code and I need to make a page more dynamic and I don't feel like doing a find and replace, but that would be just lazy.

[kevindougans]

it really helped me with a current project i've just started working on because of the self made MCV structure they have setup means they use all the column names from the database.

E.g. they have a page to display everything and it's like :

$html_output .=<<<END
			
			  <table style="width: 100%;" cellpadding="5" cellspacing="5" border="0">						
					<tr>
					  <th class="forms_th" style="width: 20%;">Overhead for job:</th>
					  <td style="width: 80%;">$rid</td>
				  </tr>
				  <tr>
					  <th class="forms_th" style="width: 20%;">Unique Overhead ID:</th>
					  <td style="width: 80%;">$eid $quote_ref</td>
				  </tr>
				  <tr>
					  <th class="forms_th" style="width: 20%;">Overhead Type:</th>
					  <td style="width: 80%;">$overhead_type $form_req</td>
				  </tr>
				    <tr>
					  <th class="forms_th" style="width: 20%;">Date:</th>
					  <td style="width: 80%;">$purchase_date</td>
				  </tr>

			  </table>

END;

and then instead of looping through the results and setting each variable I can now just do extract.... simple :-)

[ShawnCplus]

Extract is almost always bad practice, especially in the use case provided. Case in point: You worked on some code at a job and it uses extract and you leave the job and someone else comes along and inherits the code. "Hmm, there's this bug involving $somevar but I don't see it defined anywhere..."

3 hours later extract($some_random_array); // I'm awesome "FFFFUUUUUUUU"

[kevindougans]

Extract is almost always bad practice, especially in the use case provided. Case in point: You worked on some code at a job and it uses extract and you leave the job and someone else comes along and inherits the code. "Hmm, there's this bug involving $somevar but I don't see it defined anywhere..."

3 hours later extract($some_random_array); // I'm awesome "FFFFUUUUUUUU"

That's why you should comment your code clearly :-)

[ShawnCplus]

That's why you should comment your code clearly :-)

Comments or not, extract is by definition obfuscating the initialization of multiple variables. In addition using extract on superglobals (_GET, _POST, etc.) is a massive security risk (You didn't provide this in your example, I'm just pointing out that wanton use of extract is dangerous)

[JuanMan]

Aren't you sure you've misspelled that?

Did you really mean ...

mysql_fetch_array()

Grt.....:cool: Thanks for such info....:)

One more thing i want to share that i also tried this wid

mysql_fatch_array()

wel no dought its also working wid this also...:icon_biggrin:

n i already starting to use this one.....:icon_biggrin::icon_cool:

[OS_dev]

That's why you should comment your code clearly :-)

Dude, let me tell you. If I ever used extract in my current position I would feel like an idiot.

Mainly because it automatically doubles your memory usage, that is unless it destroys the array upon doing it. But not only that, it show a lack of understanding in how to use arrays.

[pbcomput]

Comments or not, extract is by definition obfuscating the initialization of multiple variables. In addition using extract on superglobals (_GET, _POST, etc.) is a massive security risk (You didn't provide this in your example, I'm just pointing out that wanton use of extract is dangerous)

can u pls tell me y it should b dangerous ?? bcz i started workin like that in my projects...

Thanks..:)

-----

@ JuanMan

Its just a typo...yeah m want to tell that only...