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Overview

Source: https://medium.com/@Mahmoud_Zalt/eloquent-relationships-cheat-sheet-5155498c209

	One to one (1-1)	One to many (1-n)	Poly one to many (1x-n)	Many to many (n-n)	Poly many to many (nx-n)
Number of models	2 only	2 only	3 and above	2 only	3 and above
Number of tables	2 (1/model)	2 (1/model)	3+ (1/model)	3 (1/model + pivot)	4+ (1/model + pivot)
Pivot table	-	-	-	required

darhonbek

Darkhonbek Mamataliev

Senior iOS Engineer at TikTok · ex Uber

GitHub | LinkedIn | Email

Building pixel perfect apps for 1 billion people. Areas: social network, delivery, finance, logistics.

EXPERIENCE

**TikTok, October, 2023 – Present

Twoody

<?php
function duplicateCount($text) {
  $ret  = 0;
  $a    = [];
  $t    = str_split( strtolower( $text ) );
  $l    = count($t);
  for($i=0; $i<$l; $i++){
    $c = $t[$i];
    if ( array_key_exists($c, $t) ){
      if( $t[$c] === 1 )