preg_replace在下划线之前的所有数字，而不是替换下划线和结束

Question

I would like to replace all numbers before the underscore, than replace underscore too and than end. Underscore should behave like "breakpoint".

I have strings with prefix, like:

0_xxxx
1_xxxx
2_xxxx

and I have to remove that prefix.

Could someone please provide a example?

Answer 1

You can use preg_replace to remove these prefixes using regexes.

echo preg_replace('/^\d+_/', '', '0_xxxx');
// Will output 'xxxx'

This example code will remove all numbers followed by an underscore from the start of your string.