Is there a reason that I'm not seeing, why this doesn't work?
$string = $someLongUserGeneratedString;
$replaced = str_replace(' ', '_', $string);
echo $replaced;
The output still includes spaces... Any ideas would be awesome
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4 Answers
I'll suggest that you use this as it will check for both single and multiple occurrence of white space (as suggested by Lucas Green).
$journalName = preg_replace('/\s+/', '_', $journalName);
instead of:
$journalName = str_replace(' ', '_', $journalName);
5 Comments
Lucas Green
It uses a Regular Expression to match a class of strings in a given pattern, and replaces it with a substitution sequence when matched.
Lucas Green
There is a bug in this version, it will only match groups of more than one space.
Laurent Brieu
@LucasGreen, you right ! Correct one is : preg_replace('/\s+/', '_', $journalName);
Andrew
you probably want trim as well: preg_replace('/\s+/', '_', trim($journalName));
Alliswell
For UTF-8 encoding use
preg_replace('/\s+/u', '_', $journalName)Try this instead:
$journalName = preg_replace('/\s+/', '_', $journalName);
Explanation: you are most likely seeing whitespace, not just plain spaces (there is a difference).
Comments
For one matched character replace, use str_replace:
$string = str_replace(' ', '_', $string);
For all matched character replace, use preg_replace:
$string = preg_replace('/\s+/', '_', $string);
Comments
Try this instead:
$journalName = str_replace(' ', '_', $journalName);
to remove white space
1 Comment
Ash Oldershaw
How does this differ from the code provided in the question (other than variable names)?
$replaced = str_replace(' ', '_', $string);