Function on PHP

functions.php

/**
 * Pasar de Kg a toneladas o al reves
 */
function formatKgtoTon($peso,$ton = false){
  return $ton ? $peso*1000 : $peso/1000;
}

/**
 * Formato europeo + separador decimal
 */
function formatEuDecimal($num,$decimal = 2){
  return number_format($num,$decimal,',','.');
}

/**
 * Limpiar los espacios dobles de un string
 */
function cleanDobleSpace($string){
  return preg_replace('/\s+/', ' ',trim($string));
}

/**
 * Saber si una directorio esta vacio o no
 */
function isDirEmpty($dir) {
  if (!is_readable($dir)) return NULL;
  $handle = opendir($dir);
  while (false !== ($entry = readdir($handle))) {
    if ($entry != "." && $entry != "..") {
      return false;
    }
  }
  return true;
}

/**
 * Saber la url actual
 */
function getUrl($type = 'full'){
  $host = $_SERVER["HTTP_HOST"];
  $url = $_SERVER["REQUEST_URI"];
  if($type == 'host'):
    return "http://".$host;
  elseif($type == 'url'):
    return $url;
  else:
    return "http://".$host.$url;
  endif;
}

/**
 * Saber la ip del usuario
 */
function getRealIP() {
  $ipaddress = '';
  if (!empty($_SERVER['HTTP_CLIENT_IP']))
    $ipaddress = $_SERVER['HTTP_CLIENT_IP'];
  else if(!empty($_SERVER['HTTP_X_FORWARDED_FOR']))
    $ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'];
  else if(!empty($_SERVER['HTTP_X_FORWARDED']))
    $ipaddress = $_SERVER['HTTP_X_FORWARDED'];
  else if(!empty($_SERVER['HTTP_FORWARDED_FOR']))
    $ipaddress = $_SERVER['HTTP_FORWARDED_FOR'];
  else if(!empty($_SERVER['HTTP_FORWARDED']))
    $ipaddress = $_SERVER['HTTP_FORWARDED'];
  else if(!empty($_SERVER['REMOTE_ADDR']))
    $ipaddress = $_SERVER['REMOTE_ADDR'];
  else
    $ipaddress = 'UNKNOWN';

  return $ipaddress;
}

/**
 * Console LOG de javascript
 * @param  [type] $data [description]
 * @return [type]       [description]
 */
function consoleLog($data){
  echo '<script>';
    echo 'console.log('.json_encode($data).')';
  echo '</script>';
}

/**
 * Dar formato a los tamaños
 */
function formatSize($size) {
  $mod = 1024;
  $units = array('B','KB','MB','GB','TB','PB');
  for ($i = 0; $size > $mod; $i++) {
    $size /= $mod;
  }
  return round($size, 2).' '.$units[$i];
}

/**
 * Mostrar el texto tal cual viene en el string con los saltos de linea etc..
 */
function printQuery($txt){
  echo '<pre>'.$txt.'</pre>';
}

/**
 * Encontrar conicidencia teniendo en cuenta el *
 */
function matchString($pattern, $str){
  $pattern = preg_replace('/([^*])/e', 'preg_quote("$1", "/")', $pattern);
  $pattern = str_replace('*', '.*', $pattern);
  return (bool) preg_match('/^' . $pattern . '$/i', $str);
}

/**
 * Generar cadena aleatoria
 */
function generatePassword($longitud = 6,$tipo = ''){
  switch ($tipo) {
    case 'num':
        $cadena="/\D+/";
      break;
    case 'alf':
        $cadena="/\d+/";
      break;
    default:
        $cadena="/\W+/";
      break;
  }
  return substr(preg_replace($cadena, "", md5(rand())).
  preg_replace($cadena, "", md5(rand())) .
  preg_replace($cadena, "", md5(rand())),
  0, $longitud);
}

/**
 * Eliminar espacios de un array
 */
function trimValue(&$value){
  $value = trim($value);
}

/**
 * Quitar accentos
 */
function quitarAcentos($string){
  $find = "ÀÁÂÄÅàáâäÒÓÔÖòóôöÈÉÊËèéêëÇçÌÍÎÏìíîïÙÚÛÜùúûüÿñÑ";
  $replace = "AAAAAaaaaOOOOooooEEEEeeeeCcIIIIiiiiUUUUuuuuyñÑ";
  return utf8_encode(strtr(utf8_decode($string), utf8_decode($find), $replace));
}

/**
 * Preparar el string para poder ser exportado
 * @param  [type] &$str [description]
 * @return [type]       [description]
 */
function cleanDataExcel(&$str){
    // escape tab characters
    $str = preg_replace("/\t/", "\\t", $str);
    // escape new lines
    $str = preg_replace("/\r?\n/", "\\n", $str);
    // convert 't' and 'f' to boolean values
    /*if($str == 't') $str = 'TRUE';
    if($str == 'f') $str = 'FALSE';*/
    // force certain number/date formats to be imported as strings
    if(preg_match("/^0/", $str) || preg_match("/^\+?\d{8,}$/", $str) || preg_match("/^\d{4}.\d{1,2}.\d{1,2}/", $str)) {
      $str = "'$str";
    }
    // escape fields that include double quotes
    if(strstr($str, '"')) $str = '"'.str_replace('"','""', $str).'"';
}