php-regexHow to use PHP regex to match a nbsp HTML whitespace?

PHP regex can be used to match a nbsp HTML whitespace by using the \s character class. This character class matches any whitespace character, including the nbsp HTML whitespace.

$string = 'This is a string with a nbsp whitespace.';

if (preg_match_all('/(\s+| +)/', $string)) {
    echo 'Matched whitespace!';
}

Output example

Matched whitespace!

Code explanation

• \s+| +: character class that matches any whitespace character, including the nbsp HTML whitespace
• preg_match(): PHP function that searches a string for a pattern, and returns true if the pattern exists, and false otherwise

Helpful links

• PHP preg_match() Function
• Regular Expressions

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