如何使用PHP删除字符串中的第7个和第8个到最后一个字符？

Question

I want to remove the the 7th and 8th to last characters in a string.

$string = "Tucson AZ 85718"; 

I am trying to remove the state abbreviation. I have a bunch of these strings for different zip codes, so I can't just replace "AZ" with ''.

Answer 1

$string = substr($string, 0, -8) . substr($string, -5);

Demo:

php> $string = "Tucson AZ 85718";
php> echo substr($string, 0, -8) . substr($string, -5);
Tucson 85718

A regex would also do the job. This one would remove any 2-uppercase-character string and the space after it:

$string = preg_replace('/\b[A-Z]{2}\b /', '', $string);