How to delete yourself in php

How to delete yourself in php: First create a PHP sample file; then delete yourself through the [if (file_exists($file)) {@unlink ($file); }] method.

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In fact, asp and php delete their own code

z.asp

The code is as follows:

<% 
s= Server.MapPath("z.asp") 
Set fso = CreateObject("Scripting.FileSystemObject") 
If fso.FileExists(s) Then 
  fso.Deletefile(s) 
End If 
Set fso = Nothing 
%>

z.php

The code is as follows:

<?php 
$file = "z.php"; 
if (file_exists($file)) { 
     @unlink ($file); 
} 
?>

Run it and it will disappear....

The code is as follows:

<% 
s2= Server.MapPath("z2.asp") 
s= Server.MapPath("z.asp") 
Set fso = CreateObject("Scripting.FileSystemObject") 
fso.CopyFile s2,s 
Set fso = Nothing 
%>

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