How to generate Invoice Number with Laravel

invoice-number-generate.php

<?php 


//IT SHOULD BE INSIDE YOUR MEHTOD

//get last record
$record = RecordModel::latest()->first();
$expNum = explode('-', $record->invoiceno);


//check first day in a year
if ( date('l',strtotime(date('Y-01-01'))) ){
    $nextInvoiceNumber = date('Y').'-0001';
} else {
    //increase 1 with last invoice number
    $nextInvoiceNumber = $expNum[0].'-'. $expNum[1]+1;
}


//Now add New record into database

$invoice = new Invoice();

$lastInvoiceID = $invoice->orderBy('id', DESC)->pluck('id')->first();
$newInvoiceID = $lastInvoiceID + 1;

This gives error the first time you are going to generate an invoice

The code is always going to go to the if statement no matter what day it is.

if ($record == null or $record == "") {
            if (date('l', strtotime(date('Y-01-01')))) {
                $invoiceno = date('Y') . '-0001';
            }
        } else {
            $expNum = explode('-', $record->invoiceno);
            $innoumber = ($expNum[1] + 1);
            $invoiceno = $expNum[0] . '-' . sprintf('%04d', $innoumber);
        }