extract from a string

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extract from a string

 
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  #1
Nov 4th, 2009
I would like to take a string (I have loaded it from the database) and extract it into chunks.

The beginning string, lets call it "$string", has the following format:

PHP Syntax (Toggle Plain Text) 
  1. <li>item1</li><li>item2</li><li>item3</li>
(maybe more li's, maybe less, or even none)

What I would like to do is extract to an array each li, display each array element seperately ( with an option to "delete it"), then after add them back to the string and place back in the database. And yes I want each array element to include the li tags within(not that its necessary, I guess I could get around it)

I understand most of it, just getting hung up on how to extract each from the string and place into an array.

Anyone have an ideas how to go about this?
Last edited by verbob; Nov 4th, 2009 at 5:49 pm.
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  #2
Nov 4th, 2009
is it possible for the seperator of the explode function to be more than one character long? (I had a thought of using explode to extract the individual elements using "</li>" as the seperator)...then I can just readd it later.

Sounds logical anyway.
Last edited by verbob; Nov 4th, 2009 at 6:56 pm.
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  #3
Nov 4th, 2009
An explode would be the quickest/easiest way to do this.
PHP Syntax (Toggle Plain Text) 
  1. $liArray = explode("</li>", $string);
  2.  
  3. foreach($liArray as $key => $value) {
  4.   // $value will contain the li string, do something with it here. 
  5. }
AJAX is not a programming language, scripting language or any other sort of language.
It is acheived by using JavaScript http functions.
So, AJAX = JavaScript.
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  #4
Nov 4th, 2009
Thanks. I am going to get it a shot. Let you know how I make out :-)
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  #5
Nov 4th, 2009
Thank you, seems to work ok.

Although there seems to be a slight "issue" with there being a "seperator" at the END of the string.

Any way around that?
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  #6
Nov 4th, 2009
SUCCESS!!

My script was being used to delete items, so instead of setting the item ="" (which left a trailing "</li>" when I imploded back), I used unset to remove the key from the array.

Thanks Will.
Last edited by verbob; Nov 4th, 2009 at 8:47 pm.
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  #7
Nov 4th, 2009
Use array_pop to remove the last index from the array:
PHP Syntax (Toggle Plain Text) 
  1. $liArray = explode("</li>", $string);
  2. // $liArray_pop will contain the last index of $liArray, $liArray will be missing the final index
  3. $liArray_pop = array_pop($liArray);
Last edited by Will Gresham; Nov 4th, 2009 at 8:50 pm.
AJAX is not a programming language, scripting language or any other sort of language.
It is acheived by using JavaScript http functions.
So, AJAX = JavaScript.
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  #8
Nov 4th, 2009
Don't seem to have that issue anymore once I changed to "unset".

Thanks for the suggestion though
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