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strtok question

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strtok question Having problems with a PHP script you are coding? This is the place to get help!

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  #1  
Old August 9th, 2002, 03:55 AM
Probe Probe is offline
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strtok question
$word = strtok(" n", $quotes);
for ($i = 0; $i < 50; $i++) {
echo "$word";
$word = strtok(" n");
}
thats a script i have to only display the first 50 characters/words??? of a row in a database that has been given the name $quotes
this code was given to me by a friend and unfortunately it is not working. does anyone have any suggestions on how to improve this code or does someone know of a better way of doing what i want. thanks for the help!
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  #2  
Old August 9th, 2002, 07:51 AM
siteworkspro.com siteworkspro.com is offline
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RE: strtok question
Probe, just gotta love dat name
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  #3  
Old August 9th, 2002, 03:11 PM
Probe Probe is offline
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RE: strtok question
that did not work either
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  #4  
Old August 9th, 2002, 05:13 PM
greggory greggory is offline
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RE: strtok question
Try something else

php Code:
Original - php Code 
  1.  
  2. // Parse $quotes for ([notspace][space or end]){up to 50 times}
  3. ereg( "(^([^ rnt]*([ rnt]|$)){0,50})", $quotes, $r );
  4.  
  5. // Print it 
  6. Echo $r[1];


Can you say me if it worked ?
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  #5  
Old August 9th, 2002, 10:59 PM
Probe Probe is offline
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RE: strtok question
i am away from my home computer right now but i will report in once i get home
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  #6  
Old August 9th, 2002, 11:18 PM
Taoism Taoism is offline
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RE: RE: strtok question

Quote:
umm doesn't the {0,50} bit mean its a number from 0-50?


No, it means the pattern can occur between 0 and 50 times...

i.e. a simple phone number regexp might look like:
php Code:
Original - php Code 
  1.  
  2. <?php
  3. $match='/(1-)?[d]{0,3}-[1-9]{1}[d]{2}-[d]{4}/';
  4. //that was off the top of my head, so it may not be correct.
  5. ?>


Cheers,
Keith.
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  #7  
Old August 10th, 2002, 12:02 AM
Probe Probe is offline
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RE: strtok question
that new approach worked! but i also want to say:
if it is 50 words... then stop or if there is a double line break then stop

what i mean by double line break is:
line 1 with stuff written in it *press enter*
empty line - line break *press enter*
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  #8  
Old August 10th, 2002, 12:21 AM
notepad notepad is offline
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RE: strtok question
don't mean to confuse but.. try, yet something else!
php Code:
Original - php Code 
  1.  
  2. <?
  3. $words[] = explode("n", $quotes);
  4. for($i=0; $i<49; $i++)
  5. {
  6.     print("$words[$i]<br>n");
  7. }
  8. ?>

this is more like your original code so maybe it'll make more sense. regular expressions take longer to execute anyway psshh
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  #9  
Old August 10th, 2002, 02:51 AM
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RE: strtok question
all i got with that were the words array
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  #10  
Old August 10th, 2002, 07:57 AM
notepad notepad is offline
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RE: strtok question
maybe i didn't understand what you wanted.. sorry
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  #11  
Old August 10th, 2002, 02:09 PM
greggory greggory is offline
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RE: strtok question
Notepad: How can you say that regular expression are longer to execute ?
When I code I sometimes ask myself for the quickest code but since I can't find any statistics on the time taken by functions, I tend to write code the simpliest way ?

If you have pointers to such stats, I'll be happpy to see them B-)
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  #12  
Old August 11th, 2002, 01:14 AM
notepad notepad is offline
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RE: strtok question
i'm just going on what i've read in books, remember i'm self-taught here so please correct me if the following statement can be proven otherwise.. and i quote from: PHP and MySQL Web Development - by Luke Welling & Laura Thomson. Chapter 4 page 116

"In general, the regular expression functions run less efficiently than the string functions with similar functionality. If your application is simple enough to use string expressions, do so."
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  #13  
Old August 11th, 2002, 01:31 AM
Gipz Gipz is offline
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RE: strtok question
I modified notpad's code to stop if "dubbel linebreak".

php Code:
Original - php Code 
  1.  
  2. <?
  3. $words[] = explode("n", $quotes, 51); // dont need to explode more than 50 words
  4. for($i=0; $i<49; $i++)
  5. {
  6.     if(empty($words[$i]))
  7.         break;
  8.     else
  9.         print("$words[$i]<br>n");
  10. }
  11. ?>


haven't tested it but it should do it.
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  #14  
Old August 12th, 2002, 03:07 PM
Probe Probe is offline
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RE: strtok question
all i get is the words array again???
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