php - I want to use the regex_replace only for the first character (phone number)

Question

I want to use the regex_replace or regexp_extract only for the first character (phone number).

For example:

89265558855 should replace +79265558855

replace only if first 8 on +7

if I use {$phone|regex_replace:"/8/":"+7"} I have For example:

89265558855 after replace I have +7926555+7+755

replace all 8 numbers

Answer 1

Use the start of string anchor ^ to match only the first character like so:

{$phone|regex_replace:"/^8/":"+7"}