split val from one end to another end

abnfire

val = "ok here <# im in fire #> i want this words too";

now how can i capture <# im in fire #> from val.

i know we use split but really dont know how. can you please help me here?

diego25

Something like

preg_match_all('/<#(.*)#>/', $val, $matches);

Now $matches[1], 2, 3, etc will contain what you're looking for.

Diego

abnfire

$val = " ok here <# im here but why #> ok i want this too";

preg_match_all('/<#(.*)#>/', $val, $matches); 
print_r($matches);

ouput: Array ( [0] => Array ( [0] => <# im here but why #> ) [1] => Array ( [0] => im here but why ) )

if you c it did not display first two words "ok here". and also i want <# #> this two words to be disapare from the code.

diego25

f you c it did not display first two words "ok here".

Well, I thought you wanted the stuff in between the <# and #>. "ok here" is outside that, so that's why I did not includ it. What do you want exactly? What exactly do you mean by "capture"?

and also i want <# #> this two words to be disapare from the code.

Well, if you see $matches[1][0], it contains the string in between <# and #> without the delimiters. I said to start from $matches[1], didn't I? I didn't tell you to use $matches[0]....

Diego

abnfire

$val = " ok here <# im here but why #> ok i want this too";

well i want val to display like this:
$val[0] = ok here
$val[1] = im here but why
$val[2] = ok i want this too

any idea how to do this please.

diego25

Try this:

$val = " ok here <# im here but why #> ok i want this too"; 
preg_match_all('/(.*)<#(.*)#>(.*)/', $val, $matches);
print $matches[1][0] . "\n";
print $matches[2][0] . "\n";
print $matches[3][0] . "\n";

Diego

abnfire

$val = "<# im here but why #> ok i want this too <# ok here #> here <##>";
preg_match_all('/(.)<#(.)#>(.*)/', $val, $matches);
print $matches[1][0] . "\n<br>";
print $matches[2][0] . "\n<br>";
print $matches[3][0] . "\n<br>";
print_r($matches);

if you try this it as error it dose'nt show the way it suppose to. any idea why?

Weedpacket

Yep, you need color=darkblue[/color] instead of color=darkblue[/color]. Look in the manual under "Pattern syntax".

You've also got a problem:
"This is the first piece <# then this bit #> then the second piece <#then another bit#> then the third piece."

Is the second piece supposed to match the last (.?) of the first match, or the first (.?) of the second match?

If you just want an array of all the pieces in and out of <#...#> like

This is the first piece
then this bit
then the second piece
then another bit
then the third piece.

Then $bits = preg_split("/<#|#>/"$val); will do that for you. If you're wondering, (and assuming that <# and #> are all properly paired up in the string) every odd-numbered element in the array is from inside a <# #> pair, and every even-numbered element (including the 0th) is from outside.

abnfire

if you use this:
$val= "ok im here <# ok here";
$bits = preg_split("/<#|#>/",$val);

it split this tow words, but i want if this <# and this #> exist then split it else dont
more like this:
$val = "<# ok here #> im here"; split should work on this.
$val = "ok here <# im here #> do it"; split should work on this.
$val= "ok im here <# ok here"; Wont work here.

any idea how to do this?

Weedpacket

Okay, so you want to check that <# #> are properly paired. I'll assume they can't be nested <# like <# this #> at all #>...

They won't be properly paired if:
There's a #> before the first <#
There's a #> after the last <#
There's a #> ... #> or a <# ... <# where the "..." don't contain a <# or #>.

Test to make sure they're properly paired first. If they are, then it can be split into an array of $bits. If they aren't set $bits=array(). After that, you can see if the splitting was successful, because only then would count($bits)>0.

There are various ways of doing the test, but one preg_match() regexp (which
is basically a direct implementation of those rules) would probably[] be

/^(((?!<#).)*?)#>|<#(((?!#>).)*?)$|#>(((?!<#).)*?)#>|<#(((?!#>).)*?)<#/

if(preg_match(...that...,$val))
{	// Bad string.
	$bits=array();
}
else
{	$bits=preg_split(...etc...);
}

Other approaches might be better, though.

[*]I mean, it's not like I tested it or anything...

Weedpacket

Originally posted by Weedpacket
Other approaches might be better, though.

Eg. pull out all proper pairings of <# and #> and see
if there are any <# or #> left.

$test = preg_replace('/<#(((?!<#|#>).)*)#>/', '', $val);
if(strpos($test, '#>')!==false || strpos($test, '<#')!==false)
{	$bits=array();
}
else
{	$bits = preg_split('/<#|#>/',$val);
}