Question

I want to replace whole word in php. I found a code from the link below
PHP string replace match whole word

I took code sample below from the above link.

$text = preg_replace('/\bHello\b/', 'NEW', $text);

but it is not working for me.
I have a string like

3 OR ( 2 AND CreatedDate = LAST_N_DAYS:2 ) OR 4

After replace 2 using above code it becomes

3 OR ( Name = 'LAST WEEK' AND CreatedDate = LAST_N_DAYS:Name = 'LAST WEEK' ) OR 4. 

2 is replace for “LAST_N_DAYS:2” string also. I want to replace only 2 alone. If it is with any word it should not be replaced.

Answer 1

To replace 2 with NEW:

$text = preg_replace('/\s2\s/',' NEW ',$test);