[RESOLVED] Restricting number of lines.

[Teach]

Hello!

I am using the following function to read a .db file, and echo out its contents. This is working fine - however, the file is becoming really large and we only want to output the top 30 lines of the file (as it's added into the file as new->old).

<?php $mail = file_get_contents("/path/to/mail.db"); echo nl2br(strip_tags($mail)) ?>

Is there a way we can just show the top 30 lines?

Thanks!

[ChrisBoden]

fgets() should work for you.

define('MAX_LINE_COUNT', 30);

$mail_db = fopen("/path/to/mail.db", "r");

for($i = 0; $i < MAX_LINE_COUNT; $i++) {
     $lines .= fgets($mail_db);
}

echo $lines;

[Teach]

Thank you - perfect! 🙂

[Teach]

Just to be cheeky, I wondered if I could enhance the above?

Would it be possible to have a select menu, which lets you choose whether you want to see results of:

• 50
• 100
• 150
• 200

Thank you if you can help with that!

[ChrisBoden]

<form action="linedisplay.php" method="post">
Number of line to show: 
<select name="lines">
<option value="30">30</option>
<option value="50">50</option>
</select>
</form>

linedisplay.php:

<?php
$lines_to_show = $_POST['lines'];

$mail_db = fopen("/path/to/mail.db", "r");

for($i = 0; $i < $lines_to_show; $i++) {
     $lines .= fgets($mail_db);
}

echo $lines;
?>

Of course, edit it to do whatever you need.