Useful string processing functions in PHP

January 14, 2020 10:14 pm by ATS Staff

function get_string_between($string, $start, $end) {
   $string = " " . $string;
   $ini = strpos($string, $start);
   if ($ini == 0) 
    return "";
   $ini += strlen($start);   
   $len = strpos($string, $end, $ini) - $ini;
   return substr($string, $ini, $len);
}


function get_array_strings_between($string, $start, $end) {
  $arr = array();
  $arr2 = array();
  $arr3 = array();
  $arr = explode($start, $string);
  for($i = 1; $i < count($arr); $i++) {
    $arr2[$i] = explode($end, $arr[$i]);
  }
  for($i = 1; $i <= count($arr2); $i++) {
    $arr3[$i-1] = $arr2[$i][0];
  }
  return $arr3;
}



function file_get_contents_https($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_HEADER, false);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_REFERER, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    $result = curl_exec($ch);
    curl_close($ch);
    return $result;
}

function remove_wierd($Str) {  
  $StrArr = str_split($Str); $NewStr = '';
  foreach ($StrArr as $Char) {    
    $CharNo = ord($Char);
    if ($CharNo == 163) { $NewStr .= $Char; continue; } // keep £ 
    if ($CharNo > 31 && $CharNo < 127) {
      $NewStr .= $Char;    
    }
  }  
  return $NewStr;
}

function file_get_put_image($url, $save_img) {
  $ch = curl_init($url);
  $fp = fopen($save_img, 'wb');

  curl_setopt($ch, CURLOPT_FILE, $fp);
  curl_setopt($ch, CURLOPT_HEADER, 0);
  curl_exec($ch);
  curl_close($ch);
  fclose($fp);
}

function echo_textarea($x, $rows=20, $cols=70) {
  echo '<textarea cols="'.$cols.'" rows="'.$rows.'">'.$x.'</textarea><br /><br />';
}

function print_r_textarea($x, $rows=20, $cols=70) {
  echo '<textarea cols="'.$cols.'" rows="'.$rows.'">'; print_r($x); echo '</textarea><br /><br />';
}

function pt($x, $rows=20, $cols=70) {
  echo '<textarea cols="'.$cols.'" rows="'.$rows.'">'; print_r($x); echo '</textarea><br /><br />';
}

function get_web_page( $url ) {
    $options = array(
        CURLOPT_RETURNTRANSFER => true,     // return web page
        CURLOPT_HEADER         => false,    // don't return headers
        CURLOPT_FOLLOWLOCATION => true,     // follow redirects
        CURLOPT_ENCODING       => "",       // handle all encodings
        CURLOPT_USERAGENT      => "spider", // who am i
        CURLOPT_AUTOREFERER    => true,     // set referer on redirect
        CURLOPT_CONNECTTIMEOUT => 120,      // timeout on connect
        CURLOPT_TIMEOUT        => 120,      // timeout on response
        CURLOPT_MAXREDIRS      => 10,       // stop after 10 redirects
        CURLOPT_SSL_VERIFYPEER => false     // Disabled SSL Cert checks
    );

    $ch      = curl_init( $url );
    curl_setopt_array( $ch, $options );
    $content = curl_exec( $ch );
    $err     = curl_errno( $ch );
    $errmsg  = curl_error( $ch );
    $header  = curl_getinfo( $ch );
    curl_close( $ch );

    $header['errno']   = $err;
    $header['errmsg']  = $errmsg;
    $header['content'] = $content;
    // return $header;
    return $content;

}

function clean_get_string_between($str, $start, $end) {
  return trim(strip_tags(get_string_between($str, $start, $end)));
}

function match_found($needles, $haystack) {
    foreach($needles as $needle) {
        if (strpos($haystack, $needle) !== false) {
            return true;
        }
    }
    return false;
}

function match_all_found($needles, $haystack) {
    if(empty($needles)) {
        return false;
    }
 
    foreach($needles as $needle) {
        if (strpos($haystack, $needle) == false) {
            return false;
        }
    }
    return true;
}

function match_one($str, $sub) {
  if (strpos($str, $sub) !== false) {
      return 'true';
  }  
  return false;
}


function get_float($str) {
    return filter_var( $str, FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION );
}

function get_number($str) {
    return  filter_var($str, FILTER_SANITIZE_NUMBER_INT);
}





// ***** Other Functions *****

function wordwrap_ucwords_trim($x, $wrap_length) {
  return wordwrap(ucwords(strtolower(trim($x))), $wrap_length, '<br />');
}

function wordwrap_ucase_trim($x, $wrap_length) {
  return wordwrap(strtoupper(strtoupper(trim($x))), $wrap_length, '<br />');
}

function remove_period($x) {
	return trim($x, ".");
}

function download_file( $fullPath ){

  // Must be fresh start
  if( headers_sent() )
    die('Headers Sent');

  // Required for some browsers
  if(ini_get('zlib.output_compression'))
    ini_set('zlib.output_compression', 'Off');

  // File Exists?
  if( file_exists($fullPath) ){
   
    // Parse Info / Get Extension
    $fsize = filesize($fullPath);
    $path_parts = pathinfo($fullPath);
    $ext = strtolower($path_parts["extension"]);
   
    // Determine Content Type
    switch ($ext) {
      case "pdf": $ctype="application/pdf"; break;
      case "exe": $ctype="application/octet-stream"; break;
      case "zip": $ctype="application/zip"; break;
      case "doc": $ctype="application/msword"; break;
      case "xls": $ctype="application/vnd.ms-excel"; break;
      case "ppt": $ctype="application/vnd.ms-powerpoint"; break;
      case "gif": $ctype="image/gif"; break;
      case "png": $ctype="image/png"; break;
      case "jpeg":
      case "jpg": $ctype="image/jpg"; break;
      default: $ctype="application/force-download";
    }

    header("Pragma: public"); // required
    header("Expires: 0");
    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Cache-Control: private",false); // required for certain browsers
    header("Content-Type: $ctype");
    header("Content-Disposition: attachment; filename=\"".basename($fullPath)."\";" );
    header("Content-Transfer-Encoding: binary");
    header("Content-Length: ".$fsize);
    ob_clean();
    flush();
    readfile( $fullPath );

  } else
    die('File Not Found');

}

function pad_titles_numbers($title_string, $number_string, $length, $num_length, $char = " ") {
    $fill_length = $length - ( strlen($title_string) + strlen($number_string) );
    return $title_string . ' ' . str_repeat($char, $fill_length) . ' ' . str_pad( $number_string, $num_length, " ", STR_PAD_LEFT);
}

function lr_trim_array($arr, $l_str, $r_str) {
  for($i = 0; $i < count($arr); $i++) {
    $arr[$i] = trim($arr[$i]);
    $arr[$i] = ltrim($arr[$i], $l_str);
    $arr[$i] = rtrim($arr[$i], $r_str);
  }
  return $arr;
}

function prepend_array_str($arr, $str) {
  for($i = 0; $i < count($arr); $i++) {
    $arr[$i] = $str . $arr[$i];
  }
  return $arr;
}

function append_array_str($arr, $str) {
  for($i = 0; $i < count($arr); $i++) {
    $arr[$i] = $arr[$i] . $str;
  }
  return $arr;
}

function ucfirst_array($arr) {
  for($i = 0; $i < count($arr); $i++) {
    $arr[$i] = ucfirst($arr[$i]);
  }
  return $arr;
}

function ucwords_array($arr) {
  for($i = 0; $i < count($arr); $i++) {
    $arr[$i] = ucwords($arr[$i]);
  }
  return $arr;
}

function remove_duplicate_words($s) {
    return implode(' ', array_unique(explode(' ', $s)));
}