How to call functions within PHP string_PHP Tutorial

"{$o0_0o{phpinfo()}}"
1
"{$Let me go [phpinfo()]}"

"${~-~phpinfo()}"

"${0e0+phpinfo()}"
What fuck?

<<

$→_→${$←_←{pHPINfo(~@-@~-$$In short, I am a good person)}}

I am a good person;

?>
I simply compiled the rules:

Variable variables

" ${phpinfo()} "

" ${@phpinfo()} "

" ${${phpinfo()} }"

" ${{0x00-0x20}phpinfo()} "

" ${{Logic||Operation}phpinfo()} "

Array index

" {${Legal variable name}[phpinfo()]} "

" {${Legal variable name}{phpinfo()}} "

http://www.bkjia.com/PHPjc/477989.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/477989.htmlTechArticle{$o0_0o{phpinfo()}} 1 {$Let me go [phpinfo()]} ${ ~-~phpinfo()} ${0e0+phpinfo()} What fuck? ?php I am a good person$_${$_{pHPINfo(~@-@~-$$Anyway, I am a good person)}} I am Good person; ? I am simple...