Php converts an uppercase name to an underline to separate the names

This article mainly introduces how php converts an uppercase name to an underscore (_), and explains some naming methods that are not used to an uppercase style, such as Pascal name and camper name, you can refer to the following code to convert a string in uppercase to _ + in lowercase. this problem occurs when naming variables:

$ Name = 'apppromozhongqiu2014activestatusselector '; echo cc_format ($ name); function cc_format ($ name) {$ temp_array = array (); for ($ I = 0; $ I

 
  
= 65 & $ ascii_code <= 90) {if ($ I = 0) {$ temp_array [] = chr ($ ascii_code + 32 );} else {$ temp_array [] = '_'. chr ($ ascii_code + 32) ;}} else {$ temp_array [] = $ name [$ I] ;}} return implode ('', $ temp_array );}