[RESOLVED] array_diff Not Executed by Mozilla Browsers??

[hotwire]

Hello Forum,

I have a crazy situation where it appears that only Firefox (Mozilla) have a problem executing the PHP array_diff function..

Explorer and Opera executes the function perfectly but not Firefox..

I used the echo to view the results of 2 arrays compared using the array_diff function and Firefox is the only browser that does not compute the differences of the 2 arrays..

here is a snip of my coding where I compare 2 arrays and echo the differences:

if (isset($_POST['value']))
{

  $xmsg = $_POST['value'];
  $array = file("xxx.mxg") or exit("Unable to open file!");

  $result = array_diff($array, $xmsg);

	$fp = fopen( "xxx.mxg" , "w" );
    foreach($result as $val)
    {
	echo $val."<br>";
	fwrite($fp, $val)."<br />";
    }
	fclose($fp);

    }

Any help or Info on this will be much appreciated.. Seems crazy to me that Firefox is the only browser failing this PHP function😕

I also made sure I cleared all Browser Cacheing and History..

[laserlight]

None of the browsers actually execute array_diff(). The PHP interpreter on the web server is the one that executes array_diff().

I suggest that you try this:

if (isset($_POST['value']) && is_array($_POST['value']))
{
    $xmsg = $_POST['value'];
    $array = file("xxx.mxg") or exit("Unable to open file!");

$result = array_diff($array, $xmsg);

$fp = fopen( "xxx.mxg" , "w" );
foreach($result as $val)
{
    echo $val."<br>";
    fwrite($fp, $val)."<br />";
}
fclose($fp);
}
else
{
    echo 'Error: input is not an array.';
}

[hotwire]

Hi laserlight, and thanks for looking at this for me..

Yeah, That's What I Thought.. This should be a server side thing, but I have actually racked my brain as to why only Firefox is not presenting any differences using the array_diff() function.. This is why I used the echo so i can actually see the differences being executed..

Same Data, Same File but no comparison being presented by Firefox.. I even used my other computer and same problem.

I tried your changes, but same issue exist..

The POST value is actually from checkbox arrays I am using for a delete message selection.. The arrays being carried are seperated by ~ for 5 variables.. Time, Date, Sender, Message, and A number to represent if the message has been viewed or not.

On the process end, the echo shows all the arrays that were checked, even in Firefox, but firefox will shows all the arrays in the file as if there was no difference.. However, Explorer and Opera shows the difference in the arrays..

STRANGE! 😕

[laserlight]

I tried your changes, but same issue exist..

That's good since we can rule out the possibility that $POST['value'] is not an array. Now, let's see what the arrays actually contain before array_diff() is called:

if (isset($_POST['value']) && is_array($_POST['value']))
{
    print_r($_POST['value']);
    echo "<br />\n";
    $array = file("xxx.mxg") or exit("Unable to open file!");
    print_r($array);
    echo "<br />\n";

$result = array_diff($array, $_POST['value']);

$fp = fopen("xxx.mxg" , "w");
foreach ($result as $val)
{
    echo $val . "<br />\n";
    fwrite($fp, $val)."<br />";
}
fclose($fp);
}
else
{
    echo 'Error: input is not an array.';
}

Post the results here.

[hotwire]

ok laserlight,

this is the result from your changes above:

Array ( [0] => 1229183067~12/13/08~SenderID~Set All Of The Above 13~1 [1] => 1229183128~12/13/08~SenderID~Set All Of The Above 19~1 [2] => 1229183078~12/13/08~SenderID~Set All Of The Above 14~1 [3] => 1229183010~12/13/08~SenderID~Set This as text~1 [4] => 1229162410~12/13/08~SenderID~More and More Messages!!~1 )
Array ( [0] => 1229183057~12/13/08~SenderID~Set All Of The Above 12~0 [1] => 1229183067~12/13/08~SenderID~Set All Of The Above 13~1 [2] => 1229183128~12/13/08~SenderID~Set All Of The Above 19~1 [3] => 1229183078~12/13/08~SenderID~Set All Of The Above 14~1 [4] => 1229183010~12/13/08~SenderID~Set This as text~1 [5] => 1229162410~12/13/08~SenderID~More and More Messages!!~1 [6] => 1229183137~12/13/08~SenderID~Set All Of The Above 20~1 )
1229183057~12/13/08~SenderID~Set All Of The Above 12~0
1229183067~12/13/08~SenderID~Set All Of The Above 13~1
1229183128~12/13/08~SenderID~Set All Of The Above 19~1
1229183078~12/13/08~SenderID~Set All Of The Above 14~1
1229183010~12/13/08~SenderID~Set This as text~1
1229162410~12/13/08~SenderID~More and More Messages!!~1
1229183137~12/13/08~SenderID~Set All Of The Above 20~1

[hotwire]

By The way laserlight, the results I pasted above was from me selecting 6 out of 7 checkboxes..

There are only 7 messages in the data sheet...

[laserlight]

Um, that is not possible. I notice this warning:

Warning: array_diff(): Argument #2 is not an array in /home/content/a/r/t/artienet/html/0572/tmaps/msgs/delete.php on line 14

Clearly, $POST['value'] is not an array. But control cannot get to this part of the code without $POST['value'] being an array since there is a check with is_array().

I believe that you are not actually using my code, but instead are trying to integrate the changes, and somehow doing it incorrectly. I suggest that you try out this test script:

<?php
if (isset($_POST['value']) && is_array($_POST['value']))
{
    $array = range(1, 3);

$result = array_diff($array, $_POST['value']);

echo 'Deleted: ';
foreach ($result as $val)
{
    echo $val . ' ';
}
echo "<br />\n";
}
?>
<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">
1<input type="checkbox" name="value[]" value="1" /><br />
2<input type="checkbox" name="value[]" value="2" /><br />
3<input type="checkbox" name="value[]" value="3" /><br />
<input type="submit" value="Delete" />
</form>

[hotwire]

You Are Correct laserlight, I appologize.. I mistakenly removed $xmsg = $_POST['value'];

This is what caused the argument errors.... I re-edited and pasted the new results as accurate.. Sorry for the Inconvinience...

Check the edited Replies.. Thanks..

[laserlight]

hmm... the corresponding inputs look identical, but there may be a catch: [man]file/man leaves the newline sequence at the end of each line.

[hotwire]

Yeah, that's what's getting me.. Firefox continue to show all matching data even if I only check 1 or 2 boxes out of the 7.. Explorer and Opera shows correctly.. Strange..

[laserlight]

hotwire wrote:

Yeah, that's what's getting me.. Firefox continue to show all matching data even if I only check 1 or 2 boxes out of the 7.. Explorer and Opera shows correctly.. Strange..

Have you run my test script yet?

The next step would be to address the newline problem by running:

foreach ($array as $key => $value)
{
    $array[$key] = rtrim($value);
}

and only then do you use array_diff().

[hotwire]

Yes, I did run the test script and it works Great!

[hotwire]

Ok laserlight,

You starting to put a smile on my face 🙂 ... Now I see the differences, but my entire data sheet is being erased now :evilgrin:...

I'm getting excited! The

 foreach ($array as $key => $value)
{
    $array[$key] = rtrim($value);
}

Appears to have made a big difference, if i can stop from erasing the entire data file now..

[laserlight]

What is your current code?

[hotwire]

Ok laserlight,

I added the rtim code for the POST array also because without it Explorer was failing and Firefox working.. Talkin about a switch 🙂

Anyhow here is my code.. It basically lists all messages from the data sheet and place a checkbox near them for deleting.. The echo $val."<br>"; is only temporary for diagnosing the immediate problem..

<?php
if (isset($_POST['value']) && is_array($_POST['value']))

{
  $ck=0;
  $x=0;
  $xmsg = $_POST['value'];
  $array = file("data/25k2525.mxg") or exit("Unable to open file!");
  $cx = count($array);
  $cy = count($xmsg);

foreach ($array as $key => $value)
{
    $array[$key] = rtrim($value);
}

foreach ($xmsg as $key => $value2)
{
    $xmsg[$key] = rtrim($value2);
}

  $result = array_diff($array, $xmsg);

	$fp = fopen( "data/25k2525.mxg" , "w" );
    foreach($result as $val)
    {
	echo $val."<br>";
	fwrite($fp, $val)."<br />";
    }
	fclose($fp);
    }


$array= file("data/25k2525.mxg") or exit("No Messages Available At This Time!");
?>
<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">

<?
echo "<table bgcolor='#000033' border='5' width='50' cellpadding='2' cellspacing='0'>";    echo "<tr><td>";
     echo "<table bgcolor='#555555' border='1' width='75' cellpadding='5' cellspacing='0'>";
     echo "<tr><th align='left'>";
     echo "<font face='arial' size='3' color='white'>Welcome To Your Message Box";
     echo "</th></tr>";
     echo "<tr><td bgcolor='#F3ECE0'>";
     echo "<font color='green' face='arial'><i>Viewed</i></font>&nbsp;&nbsp;<font face='arial' size='2' color='#000000'>=&nbsp;Messages You Already Read.</font>&nbsp;&nbsp;&nbsp;&nbsp;<font color='#FF0000' face='arial'><i>Unread</i></font>&nbsp;&nbsp;<font face='arial' size='2' color='#000000'>=&nbsp;Messages You Have Not Read";
    echo "</td></tr>";
    echo "<tr><td nowrap>";
    echo "<div style='background-color:#FFFFEC; width:555px; height:150px; overflow:auto; padding-left:8px; padding-top:5px'>";
	foreach($array as $val)
    {
	$rdid = substr($val, 0, strpos($val, "~"));
	$prdex = explode("~", $val);
	$time = $prdex[0]; // message time
    $date = $prdex[1];  // message date
	$sender = ($prdex[2]); // messgae sender
	$msg=($prdex[3]); // message contents
	$viewed=($prdex[4]); // message viewed status
	$a=2;
    $ftime = date("g:i A", $time);
    $fmsg = "Message From: ".$sender." On ".$date." At ".$ftime."<br />";

if ($viewed==1)
{
echo "<input type='checkbox' value='".$time."~".$date."~".$sender."~".$msg."~".$viewed."' name='value[]'><font color='green' size='2' face='arial'><i>Viewed</i>&nbsp;&nbsp;<a href='showmsg.php?msg=".$msg."&id=".$time."&date=".$date."&sender=".$sender."&viewed=".$viewed."' target='items' class='but1'>".$fmsg."</a>";
}
if ($viewed==0)
{
echo "<input type='checkbox' value='".$time."~".$date."~".$sender."~".$msg."~".$viewed."' name='value[]'><font color='red' size='2' face='arial'><i>Unread</i>&nbsp;&nbsp;<a href='showmsg.php?msg=".$msg."&id=".$time."&date=".$date."&sender=".$sender."&viewed=".$viewed."' target='items' class='but2'>".$fmsg."</a>";
}
}
echo "</div>";
echo "</td></tr>";
echo "<tr><td>";
echo "<input type='submit' value='Delete Selected Messages' />";
echo "</td></tr>";
echo "<tr><td align='center' bgcolor='#333333'>";
echo "<iframe name='items' width='550' height='220' src='showmsg.php' frameborder='1'>Your browser does not support inline frames or is currently configured not to display inline frames.</iframe>";
echo "</td></tr>";
echo "<tr><td height='30'>";
echo "</td></tr>";
echo "</table>";
echo "</tr></td></table>";
?>

<HTML>
<HEAD>
<style>
 .but1{
   color:#000000;
   font-size: 12px;
   text-decoration: none;
   margin-top:2px;
	}
.but1:link {
	color:#000000;
	}
.but1:visited {
	color:#0066FF;
	}
.but1:hover {
	color:#FF0000;
	}
.but1:active {
	color:#0066FF;
}

.but2{
   color:#0066FF;
   font-size: 12px;
   font-weight: bold;
   text-decoration: none;
   margin-top:2px;
	}
.but2:link {
	color:#0066FF;
	}
.but2:visited {
	color:#0066FF;
	}
.but2:hover {
	color:#FF0000;
	}
.but2:active {
	color:#0066FF;
}
</style>


</HEAD>
</HTML>

Hope this helps.. And Thanks for your time..

[laserlight]

Another change that you should make is:

fwrite($fp, $val)."<br />";

to:

fwrite($fp, $val . "\n");

[hotwire]

Ok thanks,

I did not know the thread went to another page.. Crazy me 🙂 sorry for the delay..

[hotwire]

AMAZING! Now the data is writing to the file Again! Just by changing what you told me:

fwrite($fp, $val . "\n");

Now Explore, Opera, and Firefox is writing Correctly! 😃

YOU ARE AMAZING laserlight! You have helped me before, and I Greatly Appreciate It!

You are certainly my Genius when it comes to PHP 🙂..

What was the problem with Firefox and that rtrim thing?

[laserlight]

hotwire wrote:

What was the problem with Firefox and that rtrim thing?

I am not sure, actually. Firefox appears to have been sending the form data with the newlines removed, while MSIE and Opera did not (at least from what I gather you wrote the newlines along with the rest of the data into the form element values). The final fix involved re-inserting the newlines when the file was being written back.

Oh, and remember to mark this thread as resolved (if it is) using the thread tools 🙂

[hotwire]

Gotcha, Never thought returns would be so sensative when it come to arrays and browsers.. Gee ..

Well it appears that the writing is performing ok now with the popular browsers, do you think it should be safe to use the rtrim for all future projects using arrays as this?