PHP - Limit Number Of Characters To 200 / Array

I want to run this loop until it has created 50 or a 100 links, max. At present it continues running even though no inputs are being added to the database. I suspect, it keeps looping through and collecting duplicates and then not adding them to the database. I see this as two options, I either limit the number of loops or must find someway for the pages that have already been crawled to be skipped. I am busy doing a php course and the lecturer is not answering questions about how the code could be improved. I figure that if you are going to do something in a training course it should be able to do what it needs to and if it doesn't it needs a little alteration. 

Right now this keeps looping till a 503 error happens, and then I am not sure if it is not still running server side.  In effect it does what I want it to do and all the changes I made have solved a few issues. 

How do I get it to stop before it crashes? I am thinking limiting the instances of createLink is the solution, but I am at sea here.

 

function followLinks($url) {
	
	global $alreadyCrawled;
	global $crawling;
	global $hosta;
	
	$parser = new DomDocumentParser($url);
	
	$linkList = $parser->getLinks();
	
	foreach($linkList as $link) {
		$href = $link->getAttribute("href");
		
		if((substr($href, 0, 3) !== "../") AND (strpos($href, "imagimedia") === false)) {
			continue;
		}
		else if(strpos($href, "#") !== false) {
			continue;
		}
		else if(substr($href, 0, 11) == "javascript:") {
			continue;
		}
						
		$href = createLink($href, $url);
		
		if(!in_array($href, $alreadyCrawled)) {
			$alreadyCrawled[] = $href;
			$crawling[] = $href;
						
			getDetails($href);
		}
		 			
 	 }
	array_shift($crawling);
 	
 	foreach($crawling as $site) {
 		followLinks($site); 	 	
 	 
 }	

I have the following code in my index.php:

                   <?php
                    $files = array();
                    $files = glob('download/*.iso');
                    $file = $files[count($files) - 1];
                    $strlen ( string $file ) : int  /* length of $file */
                    $filelen = $strlen -9  /* length of unwanted characters - "download/" */
                    $filename =          /* how do I get the filename starting at the 10th position  */
                   ?>

                     <div class="container">
                        <div class="divL">                       
                            <h3>Get the latest version of FoxClone iso</h3>
                          <a href="<?php echo "/{$file}";?>"><img src="images/button_get-the-app.png" alt="" width="200" height="60"></a>

I'd like to replace "Get the latest version of FoxClone iso" in the next to last line with "Get Foxclone "<?php echo "/{$filename}";?>". How do I extract just the file name from $file? I know that I have to:

1. get the length of $file
2. subtract the number of unwanted character to determine the start character (In this case, start at 10th character)
3. and extract everything from the 10th character to length of $file.

Step 3 is where I just don't know how to accomplish the task. I'd appreciate some help on this.

Thanks in advance,
Larry

Is there a limit to how many items can be stored in an array?

My code looks in a directory of photos and writes the file names into the one-dimensional array.

I just switched from my test folder to my actual photo folder - about 600 photos - and when I ran my script with var_dump enabled, my array only goes up to 128 items (0-127).

I sure hope arrays aren't that wimpy?!

Each photo is about 1-2MB in size, but since I am only storing the file name, I would expect that I could easily store thousands of elements in this array.

What is going on?

<form name="test" method="post" action="test.php">
<label for="quest">
  <input type="text" name="quest" />  <!-- REQUIRED -->
</label>
<label for="answers">
  <input type="text" name="answers[]" /> <!-- REQUIRED -->
</label>
<label for="answers">
  <input type="text" name="answers[]" /> <!-- REQUIRED -->
</label>
<label for="answers">
  <input type="text" name="answers[]" />
</label>
<label for="answers">
  <input type="text" name="answers[]" />
</label>
<label for="answers">
  <input type="text" name="answers[]" />
</label>

<label for="submit">
  <input type="submit" name="submit" value="Submit" />
</label>
</form>

$(document).ready(function() {
    var $submit = $("input[type=submit]"),
        $inputs = $('input[name=quest], input[name=answers[]]');

    function checkEmpty() {

        // filter over the empty inputs
        return $inputs.filter(function() {
            return !$.trim(this.value);
        }).length === 0;
    }

    $inputs.on('keyup', function() {
        $submit.prop("disabled", !checkEmpty());
    }).keyup(); // trigger an initial blur
});

$sql = "SELECT
h.nickname AS home,
a.nickname AS away,
h.teamid AS homeid,
a.teamid AS awayid,
s.weekno
FROM schedule s
INNER JOIN teams h ON s.homeid = h.teamid
LEFT JOIN teams a ON s.awayid = a.teamid
WHERE s.seasonno =2014";
$schedule= mysqli_query($connection, $sql);
if (!$schedule) {
die("Database query failed: " . mysqli_error($connection));
} else { 
// Placeholder for data
$data = array();
while($row = mysqli_fetch_assoc($schedule)) {
if ($row['away'] == "") {$row['away']="BYE";}
$data[$row['homeid']][$row['weekno']] = $row['away'];
$data[$row['awayid']][$row['weekno']] = '@ '.$row['home'];
}
}

$sql = "SELECT
h.nickname AS home,
a.nickname AS away,
h.teamid AS homeid,
a.teamid AS awayid,
s.weekno
FROM schedule s
INNER JOIN teams h ON s.homeid = h.teamid
LEFT JOIN teams a ON s.awayid = a.teamid
WHERE s.seasonno =2014
AND (h.teamid=$teamid OR a.teamid=$teamid)";
$schedule= mysqli_query($connection, $sql);
if (!$schedule) {
die("Database query failed: " . mysqli_error($connection));
} else { 
// Placeholder for data
$data = array();
while($row = mysqli_fetch_assoc($schedule)) {
if ($row['away'] == "") {$row['away']="BYE";}
$data[$row['homeid']][$row['weekno']] = $row['away'];
$data[$row['awayid']][$row['weekno']] = '@ '.$row['home'];
}
}

Array
(
[1] => Array
(
[1] => Jaguars
[2] => @ Colts
[3] => Redskins
[4] => @ 49ers
[5] => Rams
[6] => Giants
[7] => BYE
[8] => @ Cardinals
[9] => @ Texans
[10] => Panthers
[11] => @ Packers
[12] => Titans
[13] => @ Cowboys
[14] => Seahawks
[15] => Cowboys
[16] => @ Redskins
[17] => @ Giants
)

[27] => Array
(
[1] => @ Eagles
)

[28] => Array
(
[2] => Eagles
)

[4] => Array
(
[3] => @ Eagles
[16] => Eagles
)

[14] => Array
(
[4] => Eagles
)

[15] => Array
(
[5] => @ Eagles
)

[3] => Array
(
[6] => @ Eagles
[17] => Eagles
)

[] => Array
(
[7] => @ Eagles
)

[16] => Array
(
[8] => Eagles
)

[25] => Array
(
[9] => Eagles
)

[11] => Array
(
[10] => @ Eagles
)

[7] => Array
(
[11] => Eagles
)

[26] => Array
(
[12] => @ Eagles
)

[2] => Array
(
[13] => Eagles
[15] => @ Eagles
)

[13] => Array
(
[14] => @ Eagles
)

)

|  id          | int(4)       | NO   | PRI | NULL    | auto_increment |
| user_id     | int(4)       | NO   |     | NULL    |                |
| recipient   | varchar(30)  | NO   |     | NULL    |                |
| subject     | varchar(25)  | YES  |     | NULL    |                |
| cc_email    | varchar(30)  | YES  |     | NULL    |                |
| reply       | varchar(20)  | YES  |     | NULL    |                |
| location    | varchar(50)  | YES  |     | NULL    |                |
| stationery  | varchar(40)  | YES  |     | NULL    |                |
| ink_color   | varchar(12)  | YES  |     | NULL    |                |
| fontchosen  | varchar(30)  | YES  |     | NULL    |                |
| message     | varchar(500) | NO   |     | NULL    |                |
| attachment  | varchar(40)  | YES  |     | NULL    |                |
| messageDate | datetime     | YES  |     | NULL    |        

            $params = array(                 
               ':user_id' => $userid,                 
               ':recipient' => $this->message_vars['recipient'],                 
               ':subject' => $this->message_vars['subject'],                 
               ':cc_email' => $this->message_vars['cc_email'],                 
               ':reply' => $this->message_vars['reply'],                 
               ':location' => $this->message_vars['location'],                 
               ':stationery' => $this->message_vars['stationery'],                 
               ':ink_color' => $this->message_vars['ink_color'],                 
               ':fontchosen' => $this->message_vars['fontchosen'],                 
               ':message' => $messageInput,                 
               ':attachment' => $this->message_vars['attachment'],                 
               ':messageDate' => $date             );

$sql = "INSERT INTO messages (user_id,recipient, subject, cc_email, reply, location,stationery, ink_color, fontchosen, message,attachment) VALUES( $userid, :recipient, :subject, :cc_email, :reply, :location, :stationery, :ink_color, :fontchosen, $messageInput, :attachment, $date);";

And lastly, here is how I am calling it:
            $dbh = parent::$dbh;             
           $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);              
           if (empty($dbh))    return false;             
                  $stmt = $dbh->prepare($sql);             
                 $stmt->execute($params) or die(print_r($stmt->errorInfo(), true));              
           if (!$stmt) {    print_r($dbh->errorInfo());              }