How to remove underline in php

php method to remove underlines: first create a PHP sample file; then remove the underlines through "preg_replace( '/_[^_]*$/', '', your_string );".

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

Specific questions:

How to remove underline in php?

php - How to remove the last occurrence of underscore in a string

I have a string that contains many underscores followed by words for example: "Field_4_txtbox" I need to find the last one in the string underscore and remove everything after it (including the "_") so it returns me "Field_4" but I need it to handle different lengths of trailing strings. So I can't just trim a fixed length.

I know I can do an If statement to check for certain endings like

if(strstr($key,'chkbox')) { $string= rtrim($key, '_chkbox'); }

but I want to do this in one go using a regex pattern, how can I do it?

Solution:

The matching regular expression will be:

/_[^_]*$/

Just replace it with ":

preg_replace( '/_[^_]*$/', '', your_string );

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