[PHP] Get caller class, function and line number

here.php

<?php

/**
 * Returns caller class/file name, function and line where current
 *  
 * Potentially doesn't cover all cases, but is simple and pretty handy for use in frameworks.
 *
 * @param bool $as_array result as array or string in this format: `<file|class>:<func>():<line>`
 * @return string|array
 */
function here(bool $as_array = false): string|array
{
    $trace = debug_backtrace(!DEBUG_BACKTRACE_PROVIDE_OBJECT | DEBUG_BACKTRACE_IGNORE_ARGS, 2);
    return $as_array
        ? [
            'from' => $trace[1]['class'] ?? $trace[0]['file'],
            'function' => $trace[1]['function'],
            'line' => $trace[0]['line'],
        ]
        : sprintf(
            '%s%s%s():%s',
            $trace[1]['class'] ?? $trace[0]['file'],
            $trace[1]['type'] ?? '::',
            $trace[1]['function'],
            $trace[0]['line']
        );
}

// Usage:
class MyClass {
    public function test(): string {
        return here();
    }
}
echo (new MyClass)->test(); // MyClass->test():4