Hi!
I was reading php.net for a way to find a number of characters in a
strings. Say I want to look for a b and c ind $string.
As far as I could see, there is no function for that.
So, I can either?
1) run through the string and test using in_array('a', 'b', 'c')
2) run through array and test using strpos( $items[$i]....
Where I find #2 the best.
But is there a function which can do that faster or in a better way?
18  5794 
jodleren wrote:
Hi!
I was reading php.net for a way to find a number of characters in a
strings. Say I want to look for a b and c ind $string.
As far as I could see, there is no function for that.
preg_match("[abc]",$subject) ;
You might find reading something on regular expressions useful.
Cheers,
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Proudly running Debian Linux with 2.6.22-3-amd64 kernel, KDE 3.5.8, and PHP
5.2.4-2 generating this signature.
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jodleren said:
Hi!
I was reading php.net for a way to find a number of characters in a
strings. Say I want to look for a b and c ind $string.
As far as I could see, there is no function for that.
So, I can either?
1) run through the string and test using in_array('a', 'b', 'c')
2) run through array and test using strpos( $items[$i]....
Where I find #2 the best.
But is there a function which can do that faster or in a better way?
So you have one string, and you want to see if each of your elements are
in it individually.
So:
$needles = array("a", "b", "c");
$haystack = "This is a string with a certain number of each character in
it.";
$counts = array();
function countChars($let ter, $key, $arr) {
global $output;
$garbage = explode($letter , $arr[0]);
$arr[1][$letter] = count($garbage)-1;
}
array_walk($nee dles, 'countChars', array($haystack , &$counts));
print_r($counts ); // Array ( [a] =6 [b] =1 [c] =4 )
That's a little cleaner, I suppose. You're still going through a bunch,
but if you're just counting, that will return an array that looks like that.
All the best,
~A!
--
Anthony Levensalor an*****@mypetpr ogrammer.com
Only two things are infinite, the universe and human stupidity,
and I'm not sure about the former. - Albert Einstein
Iván Sánchez Ortega said:
jodleren wrote:
[snip]
preg_match("[abc]",$subject) ;
Oh, see, that's much better than what I did.
You might find reading something on regular expressions useful.
And so, it seems, would I. Thanks!
~A!
--
Anthony Levensalor an*****@mypetpr ogrammer.com
Only two things are infinite, the universe and human stupidity,
and I'm not sure about the former. - Albert Einstein
Iván Sánchez Ortega said:
jodleren wrote:
>Hi!
I was reading php.net for a way to find a number of characters in a
strings. Say I want to look for a b and c ind $string.
As far as I could see, there is no function for that.
preg_match("[abc]",$subject) ;
You might find reading something on regular expressions useful.
Cheers,
That will only tell you if any of the characters are in the string. Do
you have one that will say whether all of them are in the haystack?
--
Anthony Levensalor an*****@mypetpr ogrammer.com
Only two things are infinite, the universe and human stupidity,
and I'm not sure about the former. - Albert Einstein
My Pet Programmer wrote:
>>I was reading php.net for a way to find a number of characters in a
strings. Say I want to look for a b and c ind $string.
As far as I could see, there is no function for that.
preg_match("[abc]",$subject) ;
That will only tell you if any of the characters are in the string. Do
you have one that will say whether all of them are in the haystack?
Are you looking for http://php.net/count_chars ??
What are you trying to do, exactly?
--
----------------------------------
Iván Sánchez Ortega -ivansanchez-algarroba-escomposlinux-punto-org-
MSN:i_********* *************** *@hotmail.com
Jabber:iv****** ***@jabber.org ; iv*********@kde talk.net
Iván Sánchez Ortega said:
My Pet Programmer wrote:
>>>I was reading php.net for a way to find a number of characters in a
strings. Say I want to look for a b and c ind $string.
As far as I could see, there is no function for that.
preg_match( "[abc]",$subject) ;
That will only tell you if any of the characters are in the string. Do
you have one that will say whether all of them are in the haystack?
Are you looking for http://php.net/count_chars ??
What are you trying to do, exactly?
Oh, for me it was just idle curiosity. I'm not sure what the OP is after.
~A!
--
Anthony Levensalor an*****@mypetpr ogrammer.com
Only two things are infinite, the universe and human stupidity,
and I'm not sure about the former. - Albert Einstein
On Dec 28, 4:43*pm, Iván Sánchez Ortega <ivansanchez-...@rroba-
escomposlinux.-.punto.-.orgwrote:
My Pet Programmer wrote:
>I was reading php.net for a way to find a number of characters in a
strings. Say I want to look for a b and c ind $string.
As far as I could see, there is no function for that.
preg_match("[abc]",$subject) ;
That will only tell you if any of the characters are in the string. Do
you have one that will say whether all of them are in the haystack?
Are you looking forhttp://php.net/count_chars??
What are you trying to do, exactly?
To check for invalid characters in a filename
WBR
Sonnich
jodleren said:
On Dec 28, 4:43 pm, Iván Sánchez Ortega <ivansanchez-...@rroba-
escomposlinux.-.punto.-.orgwrote:
>My Pet Programmer wrote:
>>>>I was reading php.net for a way to find a number of characters in a
strings. Say I want to look for a b and c ind $string.
As far as I could see, there is no function for that.
preg_match ("[abc]",$subject) ;
That will only tell you if any of the characters are in the string. Do
you have one that will say whether all of them are in the haystack?
Are you looking forhttp://php.net/count_chars??
What are you trying to do, exactly?
To check for invalid characters in a filename
WBR
Sonnich
preg_match("*[abc]*", $haystack); worked for me.
~A!
--
Anthony Levensalor an*****@mypetpr ogrammer.com
Only two things are infinite, the universe and human stupidity,
and I'm not sure about the former. - Albert Einstein
jodleren wrote:
To check for invalid characters in a filename
Escape the filename, then.
--
----------------------------------
Iván Sánchez Ortega -ivansanchez-algarroba-escomposlinux-punto-org-
MSN:i_********* *************** *@hotmail.com
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