Online PHP editor | output for fLaYN

@ 2019-04-07T10:55:06Z

<?php

class obj {
    protected function protected_function(){
        return true;
    }
    
    public function internal_is_callable(){
        var_dump(is_callable([$this, "protected_function"]));
    }
}

$obj = new obj();

# If called from "outside" a class, is_callable() will return FALSE
var_dump(is_callable([$obj, "protected_function"]));
//returns bool(false)

# Confusingly, if called from "inside" a class, is_callable() will return TRUE
$obj->internal_is_callable();
//returns bool(true)

Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7: bool(false) bool(true)
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 bool(false) bool(true)

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