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www.mikescher.com/www/internals/utils.php

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<?php
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function startsWith($haystack, $needle)
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{
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$length = strlen($needle);
return (substr($haystack, 0, $length) === $needle);
}
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function endsWith($haystack, $needle)
{
$length = strlen($needle);
return $length === 0 || (substr($haystack, -$length) === $needle);
}
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function destructiveUrlEncode($str)
{
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$str = str_replace(' ', '_', $str);
$str = str_replace('+', '_', $str);
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$str = str_replace(':', '_', $str);
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$str = str_replace('.', '', $str);
return urlencode($str);
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}
function formatMilliseconds($millis)
{
if ($millis < 1000)
{
return $millis . 'ms';
}
else if ($millis < 10 * 1000)
{
return number_format($millis / (1000), 2) . 's';
}
else if ($millis < 60 * 1000)
{
return floor($millis / (1000)) . 's';
}
else if ($millis < 10 * 60 * 1000)
{
return floor($millis / (60 * 1000)) . 'min ' . floor(($millis % (60 * 1000)) / 1000) . 's';
}
else if ($millis < 60 * 60 * 1000)
{
return floor($millis / (60 * 1000)) . 'min';
}
else if ($millis < 10 * 60 * 60 * 1000)
{
return number_format($millis / (60 * 60 * 1000), 2) . ' hours';
}
else
{
return floor($millis / (60 * 60 * 1000)) . ' hours';
}
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}
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/**
* easy image resize function
* @author http://www.nimrodstech.com/php-image-resize/
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* @param string $file - file name to resize
* @param int $width - new image width
* @param int $height - new image height
* @param boolean $proportional - keep image proportional, default is no
* @param string $output - name of the new file (include path if needed)
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* @return boolean|resource
*/
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function smart_resize_image($file, $width, $height, $proportional, $output)
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{
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if ( $height <= 0 && $width <= 0 ) return false;
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if ( $file === null) return false;
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# Setting defaults and meta
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$info = getimagesize($file);
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$image = '';
$final_width = 0;
$final_height = 0;
list($width_old, $height_old) = $info;
$cropHeight = $cropWidth = 0;
# Calculating proportionality
if ($proportional) {
if ($width == 0) $factor = $height/$height_old;
elseif ($height == 0) $factor = $width/$width_old;
else $factor = min( $width / $width_old, $height / $height_old );
$final_width = round( $width_old * $factor );
$final_height = round( $height_old * $factor );
}
else {
$final_width = ( $width <= 0 ) ? $width_old : $width;
$final_height = ( $height <= 0 ) ? $height_old : $height;
$widthX = $width_old / $width;
$heightX = $height_old / $height;
$x = min($widthX, $heightX);
$cropWidth = ($width_old - $width * $x) / 2;
$cropHeight = ($height_old - $height * $x) / 2;
}
# Loading image to memory according to type
switch ( $info[2] ) {
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case IMAGETYPE_JPEG: $image = imagecreatefromjpeg($file); break;
case IMAGETYPE_GIF: $image = imagecreatefromgif($file); break;
case IMAGETYPE_PNG: $image = imagecreatefrompng($file); break;
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default: return false;
}
# This is the resizing/resampling/transparency-preserving magic
$image_resized = imagecreatetruecolor( $final_width, $final_height );
if ( ($info[2] == IMAGETYPE_GIF) || ($info[2] == IMAGETYPE_PNG) ) {
$transparency = imagecolortransparent($image);
$palletsize = imagecolorstotal($image);
if ($transparency >= 0 && $transparency < $palletsize) {
$transparent_color = imagecolorsforindex($image, $transparency);
$transparency = imagecolorallocate($image_resized, $transparent_color['red'], $transparent_color['green'], $transparent_color['blue']);
imagefill($image_resized, 0, 0, $transparency);
imagecolortransparent($image_resized, $transparency);
}
elseif ($info[2] == IMAGETYPE_PNG) {
imagealphablending($image_resized, false);
$color = imagecolorallocatealpha($image_resized, 0, 0, 0, 127);
imagefill($image_resized, 0, 0, $color);
imagesavealpha($image_resized, true);
}
}
imagecopyresampled($image_resized, $image, 0, 0, $cropWidth, $cropHeight, $final_width, $final_height, $width_old - 2 * $cropWidth, $height_old - 2 * $cropHeight);
# Preparing a method of providing result
switch ( strtolower($output) ) {
case 'browser':
$mime = image_type_to_mime_type($info[2]);
header("Content-type: $mime");
$output = NULL;
break;
case 'file':
$output = $file;
break;
case 'return':
return $image_resized;
break;
default:
break;
}
# Writing image according to type to the output destination and image quality
switch ( $info[2] ) {
case IMAGETYPE_GIF: imagegif($image_resized, $output); break;
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case IMAGETYPE_JPEG: imagejpeg($image_resized, $output, 100); break;
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case IMAGETYPE_PNG:
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$quality = 9 - (int)((0.9*100)/10.0);
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imagepng($image_resized, $output, $quality);
break;
default: return false;
}
return true;
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}
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/**
* @param string $file - file name to resize
* @param int $width - new image width
* @param int $height - new image height
* @param string $output - name of the new file (include path if needed)
*/
function magick_resize_image($file, $width, $height, $output)
{
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list($width_old, $height_old) = getimagesize($file);
if ($width == 0) $factor = $height/$height_old;
elseif ($height == 0) $factor = $width/$width_old;
else $factor = min( $width / $width_old, $height / $height_old );
$final_width = round( $width_old * $factor );
$final_height = round( $height_old * $factor );
$cmd = 'convert "' . $file . '" -strip -resize ' . $final_width . 'x' . $final_height . ' "' . $output . '"';
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shell_exec($cmd);
}
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function sendMail($subject, $content, $to, $from)
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{
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mail($to, $subject, $content, 'From: ' . $from);
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}
function get_client_ip() {
if (getenv('HTTP_CLIENT_IP')) return getenv('HTTP_CLIENT_IP');
else if(getenv('HTTP_X_FORWARDED_FOR')) return getenv('HTTP_X_FORWARDED_FOR');
else if(getenv('HTTP_X_FORWARDED')) return getenv('HTTP_X_FORWARDED');
else if(getenv('HTTP_FORWARDED_FOR')) return getenv('HTTP_FORWARDED_FOR');
else if(getenv('HTTP_FORWARDED')) return getenv('HTTP_FORWARDED');
else if(getenv('REMOTE_ADDR')) return getenv('REMOTE_ADDR');
else if (isset($_SERVER['HTTP_CLIENT_IP'])) return $_SERVER['HTTP_CLIENT_IP'];
else if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])) return $_SERVER['HTTP_X_FORWARDED_FOR'];
else if(isset($_SERVER['HTTP_X_FORWARDED'])) return $_SERVER['HTTP_X_FORWARDED'];
else if(isset($_SERVER['HTTP_FORWARDED_FOR'])) return $_SERVER['HTTP_FORWARDED_FOR'];
else if(isset($_SERVER['HTTP_FORWARDED'])) return $_SERVER['HTTP_FORWARDED'];
else if(isset($_SERVER['REMOTE_ADDR'])) return $_SERVER['REMOTE_ADDR'];
else return 'UNKNOWN';
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}
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function getRandomToken($length = 32)
{
try
{
if(!isset($length) || intval($length) <= 8 ) $length = 32;
if (function_exists('random_bytes')) return bin2hex(random_bytes($length));
if (function_exists('mcrypt_create_iv')) return bin2hex(mcrypt_create_iv($length, MCRYPT_DEV_URANDOM));
if (function_exists('openssl_random_pseudo_bytes')) return bin2hex(openssl_random_pseudo_bytes($length));
}
catch (Exception $e) { throw new InvalidArgumentException($e); }
throw new InvalidArgumentException("No random");
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}
function isHTTPRequest()
{
return (!isset($_SERVER['HTTPS'])) || empty($_SERVER['HTTPS']) || $_SERVER['HTTPS'] == "off";
}
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function str_max_len(string $str, int $max)
{
if (strlen($str) < $max) return $str;
return substr($str, 0, $max-3)."...";
}
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function formatException($e)
{
if ($e === null) return "NULL";
if ($e instanceof Exception)
{
$r = '';
$r .= $e->getMessage() . "\n\n";
$r .= $e->getFile() . "\n\n";
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$r .= str_replace(dirname(__DIR__), '.', $e->getTraceAsString()) . "\n\n";
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if (isset($e->xdebug_message))
{
$xdbg = $e->xdebug_message;
$xdbg = str_replace('<br />', "\n", $xdbg);
$xdbg = str_replace('<br/>', "\n", $xdbg);
$xdbg = str_replace('<br>', "\n", $xdbg);
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$xdbg = str_replace('><', "> <", $xdbg);
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$xdbg = strip_tags($xdbg);
$xdbg = htmlspecialchars($xdbg);
$r .= $xdbg . "\n";
}
return $r;
}
return 'object';
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}
function array_key_map_unique(array $array, string $key)
{
$r = [];
foreach ($array as $d) if (!in_array($d[$key], $r)) $r []= $d[$key];
return $r;
}
function array_key_map(array $array, string $key)
{
$r = [];
foreach ($array as $d) $r []= $d[$key];
return $r;
}
function curl_http_request($url)
{
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
$output = curl_exec($ch);
$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
$redirect = curl_getinfo($ch, CURLINFO_REDIRECT_URL);
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$errnum = curl_errno( $ch );
$errmsg = curl_error( $ch );
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curl_close($ch);
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return [ 'output'=>$output, 'statuscode'=>$httpcode, 'redirect'=>$redirect, 'erronum'=>$errnum, 'errorstr'=>$errmsg ];
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}