how to get something to display only once in a while loop

Question

I've got a mysql query running and it checks to see if an iterator is equal to 1, then display this div title...

if ($this->dliterator == 1) {echo "<div class='clientsection' id='downloads'>Downloads</div><br/>";};

The problem is, is that the dl iterator may not necessarily start at 1. (it is directly related to a downloadid from the database).

How can I get this to display only for the first time through the loop ONLY?

while ($row = mysql_fetch_assoc($result)) { 

   if ($row['download'] != null){
    if ($this->dliterator == 1) {echo "<div class='clientsection' id='downloads'>Downloads</div><br/>";};


    if ($editDownload == 1) {
     echo "<div class='clientlink' style='margin-top: 15px;'>";
     echo "<input name='downloads[$this->dliterator][name]' type='text' id='download$this->dliterator' value='" . $row['download'] . "'/>";
     echo "<input name='downloads[$this->dliterator][title]' type='text' id='downloadtitle$this->dliterator' value='" . $row['downloadtitle'] . "'/>";
     echo "<img class='removelink' src='/images/deletelink.png' width='15' />";
     echo "<input id='downloadid' name='downloads[$this->dliterator][id]' type='hidden' value='".$row['downloadid']."' style='display: none'/>";
     echo "<br/><img id='uploaddownload$uploaditerator' class='uploaddownload' src='../images/upload.png' width='80'/>"; 
     echo "</div>";


    };

   };

   $this->dliterator++;

   $uploaditerator++;
};

Thanks for all the answers! Here's my working solution thanks to Zuul:

if ($row['download'] != null){
if (($this->dliterator != null ) && ($check ==0)) {echo "<div class='clientsection' id='downloads'>Downloads</div><br/>";
$check++;};

suslov.nikita · Accepted Answer · 2015-04-04 20:57:06Z

10

Try this:

$check=0;

if (($this->dliterator == 1) && ($check==0)) {
  echo "<div class='clientsection' id='downloads'>Downloads</div><br/>";
  $check++;
};

It will enter the if statement if your dliterator==1 and if $check hasn't change... After inside, it will change the $check thus preventing the if statement to run again!

Hope it helps!

edited Apr 4, 2015 at 20:57

suslov.nikita

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answered Jun 2, 2010 at 21:24

Zuul

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1 Comment

Sasha Chedygov Over a year ago

I think making $check a boolean would make the example more readable, but otherwise +1.

Serty Oan · Accepted Answer · 2010-06-02 21:24:08Z

2

Put a flag out of the loop at false $firstLineFetched = false;, then if it is false you set it true and do your first line processing

answered Jun 2, 2010 at 21:24

Serty Oan

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Comments

erisco · Accepted Answer · 2010-06-02 21:22:54Z

0

$row = mysql_fetch_assoc($result);

if ($row && $row['download'] != null) {

    echo "<div class='clientsection' id='downloads'>Downloads</div><br/>";
}

while ($row) {

    // ...

    $row = mysql_fetch_assoc($result);
}

answered Jun 2, 2010 at 21:22

erisco

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2 Comments

nico gawenda Over a year ago

This looks weird - first, $row should also be checked before the while, second you would skip displaying the data of the last fetch into $row.

erisco Over a year ago

There is a lack of clarity in the question. My understanding was simply "do an extra step at the beginning of the loop on the first iteration only". This can be achieved by unrolling the loop as I have done. If this was not the goal, I did not understand the question.

niczak · Accepted Answer · 2010-06-02 21:26:09Z

0

You could just set a counter outside the loop to 0 and do something like:

if($i == 0)
  printf("<div class=........>\n");

Then be sure to increment $i ($i++) at the end of the while() and next time through the loop it will pass right over the printf() statement.

answered Jun 2, 2010 at 21:26

niczak

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