How to delete a string in php regular

php method to delete strings regularly: first create a PHP sample file; then define a set of strings; finally, use the regular expression "$regex="/(Department | Office)(?=(,| $))/";" to delete the specified string.

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Specific questions:

Now I have a bunch of strings such as department a, room b, department c and room d. I want to delete the strings ending with department and room. After deleting department c and room d, it will be c department d. How to write responsibility?

Solution:

|room

php regular expression /(department|room)(?=(,|$) )/

The php program to delete departments and offices written according to your requirements is as follows

<?php
 
 $str="a科、b室、c科d室";
 
 $regex="/(科|室)(?=(、|$))/"; 
 
  echo preg_replace($regex,"",$str); 
 
?>

Run results

a、b、c科d

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