php won't detect all spaces in a string

Question

I've got a string that comes from a POST form where I want to replace all spaced with some other character.

Here's that I did:

$cdata = str_replace(" ","#",$cdata);

And I got this.

--- Contact-ID#=#148 [10274da8]#Sinhronizācija#=#private [1000137d]#Uzvārds#=#Zom [1000137c]#Vārds#=#Tana [1000130e]#Tālrunis#=#3333 [1000130e]#Mobilais#=#5555

As you can see, spaced before "[10..." are still there. Any ideas what could be the problem?

would you able to post the correct $cdata value?

Karthik
– Karthik

2010-05-26 07:40:04 +00:00
Commented May 26, 2010 at 7:40 — Karthik
– Karthik, Commented May 26, 2010 at 7:40

Calvin · Accepted Answer · 2010-05-26 08:57:51Z

4

It's mostly likely because it's a newline character, \n. The first param of str_replace can be an array of characters to replace. Could also be a tab char. Or use preg_replace to replace all whitespace chars instead.

EDIT:

$chars_to_replace = array(" ", "\t","\n","\r","\o","\x0B"); $new_string = str_replace($chars_to_replace, "#", $cdata);

edited May 26, 2010 at 8:57

answered May 26, 2010 at 7:44

Calvin

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7 Comments

Roger Travis Over a year ago

Hmm... very strange, I replaced all whitespace characters in the manual ( " ", "/t","/n","/r","/o","/x0B" ) and it still doesn't seem to work... any other ideas?

Calvin Over a year ago

You're using the wrong slash (forward slash). You need to use a backslash (/).

Calvin Over a year ago

I totally had that backwards. Backslash = \

Roger Travis Over a year ago

LOL, thanks. edited the slash, $cdata = str_replace("\t","#",$cdata); ... still the same problem.

Roger Travis Over a year ago

Aha... I tried this $cdata = preg_replace("/[^a-zA-Z0-9\s]/", "#", $cdata); and it actually removed that mystical whitespace, as well as lost of other useful characters, but still it shows that its some whitespace character to blame... what else could it be?

|

Sarfraz · Accepted Answer · 2010-05-26 07:39:55Z

1

You need preg_replace here:

$cdata = preg_replace('/\s+/', '#', cdata);

answered May 26, 2010 at 7:39

Sarfraz

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5 Comments

Ondrej Slinták Over a year ago

You don't really need to use regex for such simple thing. There's other problem in this case as Calvin L describes.

Sarfraz Over a year ago

@Ondrej Slinták: That's right, he spotted the problem, no need for regex here.

Roger Travis Over a year ago

yea... tried $cdata = preg_replace('/\s+/', '#', $cdata); , doesn't seem to work...

Sarfraz Over a year ago

@user296516: It is because of the reason figured out by Calvin.

Roger Travis Over a year ago

yes, but str_replace of all whitespace characters ( " ", "\t","\n","\r","\o","\x0B" ) doesn't seem to work either...

Roger Travis · Accepted Answer · 2010-05-26 08:55:51Z

0

GOT IT!!! HA-HA-HA! Being a good programmer I had used mysqli_real_escape_string on $_POST before assigning it to $cdata. Now I removed it and seems to work perfect! Thanks guys!

answered May 26, 2010 at 8:55

Roger Travis

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