Regular Expression

[imperium2335]

Hi,

 

How would I make a regular expression that checks if the word "cheese" is preceded by a number using preg_match?

 

e.g. 6 cheese (including the space)

 

Regards,

 

Tom.

[cags]

Firstly there's a board for Regular Expressions, please try to keep posts in the right sections (I moved this particular one for you).

 

That's going to be a fairly easy task, a lot depends on exactly what you wish to do. This will detect if a string has a sub-string of the form 'number-space-cheese'...

 

$input = "john has 6 cheese slices";
if(preg_match('#[0-9]+ cheese\b#', $input)) {
   echo "Yes there is a number followed by a space,followed by the word cheese in the variable input";
} else {
   echo "No there isn't.";
}

[nafetski]

This might work.  Should make the space character optional as well

 

if(preg_match('/\d+\s?cheese/', $input)) {

}

[salathe]

Will the entire string be "6 cheese" or is that only part of a larger one?