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Preg_split question

9 New Member
Hi,

i have a problem with a regular expression.

i want to split a string on character pipe | with preg_split php function.

The string is :

"foo|bar|'hello |world\'abc\'de f'|bye"

Result of split must be in an array :

foo
bar
hello|world'abc 'def
bye


Anyone have an idea ?
Thank you !!
bye
Oct 6 '09 #1
14 4519
Markus
6,050 Recognized Expert Expert
What is the expression you're using?
Oct 6 '09 #2
pascalito
9 New Member
@Markus
i use preg_split function like this :

Expand|Select|Wrap|Line Numbers
  1. $val = "foo|bar|'hello|world\'abc\'def'|bye";
  2. $val = preg_split('/(?:\s\|\s)(?![\w\s]*\')/', $val, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
  3. print_r($val);
But the pattern is wrong...
Oct 6 '09 #3
Markus
6,050 Recognized Expert Expert
Hmm, the delimiter of your string is simply '|', that is, a pipe character? If so, explode() would be much better suited to it.

Expand|Select|Wrap|Line Numbers
  1. $string = "mark|jon|james|sarah|rachel|ben";
  2.  
  3. print_r(explode('|', $string));
  4.  
Oct 6 '09 #4
pascalito
9 New Member
@Markus
No, watch my example :

"foo|bar|'hello |world\'abc\'de f'|bye"

With explode function, i obtains :

foo
bar
'hello
world\'abc\'def '
|bye

I would like :

foo
bar
hello|world'abc 'def
bye

It's not the same...
Thank you
Oct 6 '09 #5
TheServant
1,168 Recognized Expert Top Contributor
I can't imagine what your string is actually about. Why is hello|world'abc 'def surrounded by inverted commas?? You would also like a pipe character | in one of the lines (not deliminated)?
I have a feeling that you will want to use regex functions rather than preg_split or explode(), and explicitly state the exact pattern...

It would be much easier to change your initial input to make the real deliminator something not included in one of your lines, or even a pattern like ||:
Expand|Select|Wrap|Line Numbers
  1. print_r(explode("||","foo||bar||'hello|world\'abc\'def'||bye"));
Oh, and for the \'s in the exploded version, you might try stripslashes on it to get rid of them.
Oct 6 '09 #6
pascalito
9 New Member
@TheServant
Your example is not good :

If my string is "foo|bar|'hello ||world\'abc\'d ef'|bye" (note the ||)

your example code return :

Expand|Select|Wrap|Line Numbers
  1. Array
  2. (
  3.     [0] => foo
  4.     [1] => bar
  5.     [2] => 'hello
  6.     [3] => world\'abc\'def'
  7.     [4] => bye
  8. )
« 'hello||world\' abc\'def' » is splitted in 2 parts... not good

I have found a solution with preg :

Expand|Select|Wrap|Line Numbers
  1. $val = preg_split("/([a-zA-Z0-9]+:'.+?'|[^\|]+)\||$/", $val, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
  2.  
Bye
Oct 6 '09 #7
TheServant
1,168 Recognized Expert Top Contributor
Glad you got it solved, but you did not read what I wrote. Between hello|world there is only one | while where you want a new line you use two ||.

You said: "foo|bar|'hello ||world\'abc\'d ef'|bye"
I said: "foo||bar||'hel lo|world\'abc\' def'||bye"

Do you see the difference? I still think that as Markus suggested, it would be quicker and easier to use explode(), but as long as it works, I guess you're happy.
Oct 7 '09 #8
pascalito
9 New Member
@TheServant
quicker and easier ??
ok, write me the function who parse input data...
Oct 7 '09 #9
pascalito
9 New Member
there is a mistake in the preg_split solution, pattern is "/('.+?'|[^\|]+)\||$/"
Oct 7 '09 #10

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