unlike_people.php

<?php
ini_set('max_execution_time', 0);
$token       = "EAAA..."; //token full quyền
$array_person = ["123","345"]; //id người muốn hủy like

$array_post = array();
foreach($array_person as $person){
    $links = "https://graph.facebook.com/$person/feed?fields=id&access_token=$token";
    while(true){
      $curls = curl_init();
      curl_setopt_array($curls, array(
        CURLOPT_URL => $links,
        CURLOPT_RETURNTRANSFER => true,
          CURLOPT_TIMEOUT => 0,
          CURLOPT_SSL_VERIFYPEER => false,
          CURLOPT_SSL_VERIFYHOST => false
      ));
      $reply = curl_exec($curls);
      curl_close($curls);
      $data  = json_decode($reply,JSON_UNESCAPED_UNICODE);
      if(isset($data["data"]) && count($data["data"])>0){
        $datas = $data["data"];
        foreach($datas as $each){
          $array_post[] = $each['id'];
        }
      }
      else{
        break;
      }
      if(!empty($data["paging"]['next'])){
        $links = $data["paging"]['next'];
      }
      else break;
    }
}
foreach($array_post as $post){
  $links = "https://graph.facebook.com/$post/reactions?method=delete&access_token=$token";
  $curls = curl_init();
  curl_setopt_array($curls, array(
    CURLOPT_URL => $links,
    CURLOPT_RETURNTRANSFER => false,
      CURLOPT_TIMEOUT => 0,
      CURLOPT_SSL_VERIFYPEER => false,
      CURLOPT_SSL_VERIFYHOST => false
  ));
  $reply = curl_exec($curls);
  curl_close($curls);
  sleep(3);
}