My script use more memory to run

[thara]

I used some codes to limit displaying characters from a paragraph in a while loop.

This is my code:

//mysqli_stmt_fetch ($stmt);    
while (mysqli_stmt_fetch($stmt)) {

     $position=70; // Define how many characters you want to display.      
     // Find what is the last character.
     $subject = substr($subjects,$position,1);

     if($subject !=" "){
        while($subject !=" "){
           $i=1;
           $position=$position+$i;
           $subject = substr($subjects,$position,1); 
        }
     }     
     $subject = substr($subjects,0,$position); 

     echo '<h4><span>Subjects / </span>'.$subject.'.....</h4>';   
}

My problem is when running this script it take long time to run. If I discrease $position's value then executing script quickly and if I increase $position's value it take long time to execute.

 

if its $position=80 I can't get it to work. Actually its not executing at all. My windows Task Manager display it is using Physical Memory 100%.

 

Can anybody tell me what is the reason for this?

Thank you.

[scootstah]

I can't really figure out what you're trying to do. Are you just trying to truncate the string to a specificed length? If so, you're making it far more complicated than it needs to be.

 

Also, what is $subjects? Where does that come from?

[Barand]

You access characters in a string as though it were an array of characters.

 

$position=70; // Define how many characters you want to display.	    
if (strlen($subjects) > $position) {
   while ($subjects[$position-1] != ' ') {
    --$position;
   }
   $subject = substr($subjects,0,$position);
   echo '<h4><span>Subjects / </span>'.$subject.'....</h4>';
}
else {
   echo '<h4><span>Subjects / </span>'.$subjects.'</h4>';
}

[PaulRyan]

<?PHP

 //mysqli_stmt_fetch ($stmt);    
 while (mysqli_stmt_fetch($stmt)) {
   $subject = $stmt['subject'];

   $cutOff = 70; //### Define how many characters you want to display.

   if(strlen($subject) > $position) {    
     $findSpace = strpos($subject, ' ', $cutOff); //### Find first space after cutoff point

     $subject = substr($subject, 0, $findSpace); //### Get the substr of subjects to display
   }

   echo '<h4><span>Subjects / </span>'. $subject .'.....</h4>';   
 }

?>

Edited February 16, 2013 by PaulRyan