funcoes.php

<?php

if (!function_exists('idade')) {
  /**
   * @param string $date (null)
   * @param string $formato (null)
   * @return int
   */
  function idade($date = null, $formato = null)
  {
    // Se o formato for diferente de 'Y-m-d', use o segundo parametro
    if($formato){
      $date = DateTime::createFromFormat($formato, $date)->format('Y-m-d');
    }
    $date = new DateTime($date);
    $interval = $date->diff( new DateTime() );
    return $interval->format( '%Y' );
  }
}
if (!function_exists('validaCPF')) {
  /**
   * @param string|int $cpf
   * @return boolean
   */
  function validaCPF($cpf = null)
  {
    if(empty($cpf)) {
      return false;
    }
    /* Remove todo conteúdo não númerico */
    $cpf = preg_replace('/[^0-9]/', '', $cpf);
    $cpf = str_pad($cpf, 11, '0', STR_PAD_LEFT);
    $CPFNulo = ['00000000000', '11111111111', '22222222222', '33333333333', '44444444444', '55555555555', '66666666666', '77777777777', '88888888888', '99999999999'];
    if (isset($cpf[10]) == false) {
      return false;
    }
    else if (in_array($cpf, $CPFNulo)) {
      return false;
    }
    else {
      for ($t = 9; $t < 11; $t++) {
        for ($d = 0, $c = 0; $c < $t; $c++) {
          $d += $cpf{$c} * (($t + 1) - $c);
        }
        $d = ((10 * $d) % 11) % 10;
        if ($cpf{$c} != $d) {
          return false;
        }
      }
      return true;
    }
  }
}
if (!function_exists('isSecure')) {
  /**
   * @return boolean
   */
  function isSecure()
  {
    $https = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') || $_SERVER['SERVER_PORT'] == 443;
    return $https;
  }
}

if (!function_exists('detect_bot')) {
  /**
   * @param string $userAgent (null)
   * @param bool $bot (null)
   * @return bool|string
   */
  function detect_bot($userAgent = null, $bot = null)
  {
    if (!$userAgent) {
      $userAgent = $_SERVER['USER_AGENT'];
    }

    $crawlers_agents = strtolower('LinkWalker|msnbot|Twitterbot|Telegrambot|ASPSeek|FeedFetcher-Google|Yahoo|YoudaoBot|AdsBot-Google|Googlebot|Scooter|Gigabot|Charlotte|eStyle|AcioRobot|GeonaBot|msnbot-media|CocoCrawler|Google|Charlotte t|MSRBOT|Yahoo! Slurp|Java VM|accoona|Yahoo|facebookexternalhit|msnbot|Bingbot|AdIdxBot|BingPreview');

    $crawlers = explode("|", $crawlers_agents);

    if(is_array($crawlers)) {
      foreach($crawlers as $crawler) {
        if (strpos(strtolower($userAgent), strtolower(trim($crawler))) !== false) {
          if($bot){
            return $bot;
          }
          return true;
        }
      }
    }
    return false;
  }
}

if (!function_exists('buscaArquivo')) {
  /**
   * @param string $dir - Path name
   * @param array|string $type - Array or string contains filetypes: 'jpg' OR ['jpg', 'png']
   * @param int $qnt - Amount of values ​​returned
   * @param string $prefix - Find the file that begins with the prefix
   * @param string $contains - Find the file that contains the word
   * @param bool $rand - mixes the returned array
   * @param bool $fulllPath - Return path and file name or return file name if set to false/null
   * @param bool $folders - Includes folders in search result
   * @author apertaoxis (Rafael Menezes) <contato@rafaemenezes.net.br>
   * @return array
   * 
   * Usage: buscaArquivo('ṕath', ['png', 'jpg'], 3); buscaArquivo('path'); buscaArquivo('path', null, null, 'name')
   */
  function buscaArquivo($dir = null, $type = null, $qnt = null, $prefix = null, $contains=null, $rand=null, $fullPath = true, $folders=null)
  {

    if (!is_dir($dir)) {
      return false;
    }
    $dir = new DirectoryIterator($dir);

    foreach ($dir as $file) {
      if ($file->isFile()) {
        if ( ($type) && ( ($file->getExtension() == $type) || (in_array($file->getExtension(), $type)) ) ) {
          if ($prefix) {
            if (substr($file->getFilename(), 0, strlen($prefix)) == $prefix) {
              $retorno[] = $fullPath ? $file->getPathname() : $file->getFilename();
            }
          }
          else if ($contains) {
            if (strpos($file->getFilename(), $contains) !== false) {
              $retorno[] = $fullPath ? $file->getPathname() : $file->getFilename();
            }
          }
          else {
            $retorno[] = $fullPath ? $file->getPathname() : $file->getFilename();
          }
        }
        else if(!$type){
          if ($prefix) {
            if (substr($file->getFilename(), 0, strlen($prefix)) == $prefix) {
              $retorno[] = $fullPath ? $file->getPathname() : $file->getFilename();
            }
          }
          else if ($contains) {
            if (strpos($file->getFilename(), $contains) !== false) {
              $retorno[] = $fullPath ? $file->getPathname() : $file->getFilename();
            }
          }
          else {
            $retorno[] = $fullPath ? $file->getPathname() : $file->getFilename();
          }
        }
      }
      else if ( ($file->isDir()) && ($folders) ) {
        $retorno[] = $file->getPathname();
      }
    }
    if ( (int) $qnt > 0) {
      $valores  = $retorno;
      $retorno  = [];
      $qnt    = (int) $qnt;

      if ($qnt < count($valores)) {
        for ($i = 0; $i < $qnt; $i++) {
          if ( isset($valores[$i]) ) {
            $retorno[] = $valores[$i];
          }
        }
      }
    }
    if($rand) {
      shuffle($retorno);
    }
    return $retorno;
  }
}