mohammadhzp

class Dummy extends Singleton {
    constructor() {
        super();
        this.i = 0;  
    }
  
    incr() { ++this.i; }
}

mohammadhzp

<?php

function compact_number_format(float $num , int $decimals = 2 , ?string $decimal_separator = '.' , ?string $thousands_separator = ','): string {
    $r = number_format($num, $decimals, $decimal_separator, $thousands_separator);
    if ($decimals === 0) {
        return $r;
    }

    return rtrim(rtrim($r, '0'), $decimal_separator);
}

mohammadhzp

# 1- Make a helper file and put following code in there
# 2- Auto-load it
# 3- call `register_ci_instance($this)` at the very beginning in your base controller
# 4- use `$ci = &get_instance()` anywhere you want. FYI: I'm not sure if `&` is even necessary when calling `get_instance`.

# Also, you may change `\App\Controllers\BaseController` for better IDE autocomplete support.
# Tested on PHP8

<?php
$CI_INSTANCE = [];  # It keeps a ref to global CI instance