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<?php |
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/** |
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* Strings.php |
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*/ |
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namespace w3l\Holt45; |
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/** |
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* Handle strings(convert, encode, replace, etc). |
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*/ |
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trait Strings |
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{ |
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/** |
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* Encrypt string |
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* |
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* NOTICE: the code in general, this method in particular, comes with absolutely no warranty. If security is important for you, then |
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* use a purpose built package. https://github.com/defuse/php-encryption seems like a good candidate. |
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* @deprecated Do not trust a two-line encryption-method. |
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* |
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* @throws Exception if extension mcrypt is not loaded. |
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* |
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* @param string $string String to encrypt |
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* @param string $key Key to encrypt/decrypt. |
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* @return string Encrypted string |
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*/ |
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public static function encrypt($string, $key) { |
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if (!extension_loaded('mcrypt')) { |
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throw new Exception('mcrypt not loaded'); |
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} |
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$iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), MCRYPT_DEV_URANDOM); |
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$encryptedString = $iv.mcrypt_encrypt(MCRYPT_RIJNDAEL_256, hash("sha256", $key, true), $string, MCRYPT_MODE_CBC, $iv); |
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return base64_encode($encryptedString); |
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} |
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/** |
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* Decrypt string |
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* |
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* NOTICE: the code in general, this method in particular, comes with absolutely no warranty. If security is important for you, then |
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* use a purpose built package. https://github.com/defuse/php-encryption seems like a good candidate. |
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* @deprecated Do not trust a two-line decryption-method. |
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* |
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* @param string $string String to decrypt |
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* @param string $key Key to encrypt/decrypt. |
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* @return string Decrypted string |
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*/ |
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public static function decrypt($string, $key) { |
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$encryptedString = base64_decode($string); |
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$iv = substr($encryptedString, 0, mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB)); |
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$decryptedString = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, hash("sha256", $key, true), substr($encryptedString, mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB)), MCRYPT_MODE_CBC, $iv); |
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return $decryptedString; |
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} |
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/** |
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* Obfuscate string (url-safe and somewhat hard to guess). |
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* |
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* @param string $input The text that should be obfuscated |
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* @return string Obfuscated string |
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*/ |
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public static function obfuscateString($input) |
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{ |
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return bin2hex(base64_encode(strrev($input))); |
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} |
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/** |
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* Deobfuscate string |
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* |
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* @param string $input Obfuscated string |
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* @return string Deobfuscated string |
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*/ |
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public static function deobfuscateString($input) |
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{ |
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return strrev(base64_decode(hex2bin($input))); |
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} |
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/** |
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* Convert <textarea> to [textarea]. |
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* |
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* @param string $html |
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* @return string |
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*/ |
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public static function textareaEncode($html) |
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{ |
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return preg_replace("/<textarea(.*?)>(.*?)<\/textarea>/is", "[textarea$1]$2[/textarea]", $html); |
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} |
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/** |
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* Convert [textarea] to <textarea>. |
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* |
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* @param string $html |
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* @return string |
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*/ |
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public static function textareaDecode($html) |
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{ |
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return preg_replace("/\[textarea(.*?)\](.*?)\[\/textarea\]/is", "<textarea$1>$2</textarea>", $html); |
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} |
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/** |
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* To replace "Hallo [@var] world" with $value. |
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* |
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* Example: |
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* ```php |
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* replace_string($string, array("val1" => "foo", "val2" => "bar")) |
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* ``` |
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* |
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* @param string $langString String containing placeholder. |
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* @param array $dynamicContent key->value array. |
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* @return string String with placeholder replaced. |
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*/ |
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public static function replaceString($langString, $dynamicContent = array()) |
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{ |
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foreach ($dynamicContent as $k => $v) { |
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$langString = str_replace("[@".$k."]", $v, $langString); |
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} |
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return $langString; |
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} |
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/** |
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* Creates rainbow-colored text. |
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* |
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* @uses Holt45::colorBlend() |
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* @uses Holt45::rgbhex() |
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* |
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* @param string $text Text wanted coloured. |
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* @return string String with span-tags with color. |
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*/ |
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public static function rainbowText($text) |
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{ |
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$colorsBase = array( |
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array(255, 0, 0), |
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array(255, 102, 0), |
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array(255, 238, 0), |
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array(0, 255, 0), |
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array(0, 153, 255), |
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array(68, 0, 255), |
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array(153, 0, 255) |
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); |
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$colorsBuild = array(); |
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$strlenText = strlen($text); |
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if ($strlenText > 7) { |
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while (count($colorsBuild) < $strlenText) { |
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for ($i = 0, $size = count($colorsBase); $i < $size; $i++) { |
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$colorsBuild[] = $colorsBase[$i]; |
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if (count($colorsBuild) >= $strlenText) { |
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continue 2; |
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} |
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if ($i < count($colorsBase)-1) { |
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$colorsBuild[] = self::colorBlend($colorsBase[$i], $colorsBase[$i+1]); |
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if (count($colorsBuild) >= $strlenText) { |
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continue 2; |
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} |
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} |
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} |
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$colorsBase = $colorsBuild; |
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$colorsBuild = array(); |
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} |
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} elseif ($strlenText <= 7) { |
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$colorsBuild = $colorsBase; |
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} |
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$arrayText = str_split($text); |
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$returnText = ""; |
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for ($i = 0, $size = count($arrayText); $i < $size; $i++) { |
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$returnText .= '<span style="color: #'.self::rgbhex($colorsBuild[$i]).';">'.$arrayText[$i].'</span>'; |
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} |
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return $returnText; |
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} |
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/** |
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* Get the symbol from a list of keyboard-keys... |
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* |
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* @used-by Holt45::kbdShortcut() |
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* |
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* @param string $inputKey Text |
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* @param string $inputOperatingSystem default|auto|win|mac|linux |
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* @return null|string HTML Entity (decimal) |
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*/ |
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public static function kbdSymbol($inputKey, $inputOperatingSystem = "default") |
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{ |
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$inputKey = mb_strtolower($inputKey); |
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if ($inputOperatingSystem == "auto") { |
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$inputOperatingSystem = "default"; |
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$getClientOperatingSystem = self::getClientOperatingSystem(); |
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if ($getClientOperatingSystem == "linux" || |
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$getClientOperatingSystem == "mac" || |
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$getClientOperatingSystem == "windows") { |
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$inputOperatingSystem = $getClientOperatingSystem; |
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} |
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} |
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$arrayConvert = array( |
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"return" => "enter", |
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"control" => "ctrl", |
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"escape" => "esc", |
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"caps lock" => "caps-lock", |
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"page up" => "page-up", |
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"page down" => "page-down", |
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"arrow left" => "arrow-left", |
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"left" => "arrow-left", |
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"arrow up" => "arrow-up", |
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"up" => "arrow-up", |
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"arrow right" => "arrow-right", |
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"right" => "arrow-right", |
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"arrow down" => "arrow-down", |
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"down" => "arrow-down" |
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); |
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/* Convert input */ |
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if (array_key_exists($inputKey, $arrayConvert)) { |
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$inputKey = $arrayConvert[$inputKey]; |
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} |
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$arrayKeySymbols = array( |
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"shift" => array("default" => "⇧"), |
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"opt" => array("default" => "⌥"), |
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"enter" => array("default" => "⏎", "mac" => "⌤"), |
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"alt" => array("default" => "⎇", "mac" => "⌥"), |
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"delete" => array("default" => "⌫"), |
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"ctrl" => array("default" => "✲", "windows" => "✲", "linux" => "⎈", "mac" => "^"), |
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"esc" => array("default" => "⎋"), |
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"command" => array("default" => "⌘"), |
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"tab" => array("default" => "↹", "mac" => "⇥"), |
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"caps-lock" => array("default" => "A", "mac" => "⇪"), |
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"page-up" => array("default" => "▲", "mac" => "⇞"), |
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"page-down" => array("default" => "▼", "mac" => "⇟"), |
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"arrow-left" => array("default" => "←"), |
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"arrow-up" => array("default" => "↑"), |
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"arrow-right" => array("default" => "→"), |
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"arrow-down" => array("default" => "↓"), |
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// Sun |
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"compose" => array("default" => "⎄"), |
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"meta" => array("default" => "◆") |
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); |
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if (array_key_exists($inputKey, $arrayKeySymbols)) { |
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return ((array_key_exists($inputOperatingSystem, $arrayKeySymbols[$inputKey])) ? |
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$arrayKeySymbols[$inputKey][$inputOperatingSystem] : |
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$arrayKeySymbols[$inputKey]["default"]); |
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} |
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return null; |
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} |
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/** |
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* Show fancy buttons for keyboard-shortcuts. |
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* |
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* @uses Holt45::kbdSymbol() |
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* |
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* @param array $inputArrayKeys |
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* @param string $inputOperatingSystem |
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* @param string $inputKbdClass |
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* @param string $inputKbdSymbolClass |
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* @param string $inputJoinGlue Glue |
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* @return string String of html |
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*/ |
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public static function kbdShortcut( |
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$inputArrayKeys, |
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$inputOperatingSystem = "default", |
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$inputKbdClass = "holt45-kbd", |
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$inputKbdSymbolClass = "holt45-kbd__symbol", |
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$inputJoinGlue = " + " |
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) { |
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$returnArray = array(); |
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foreach ($inputArrayKeys as $key) { |
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$kbdSymbol = self::kbdSymbol($key, $inputOperatingSystem); |
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$kbdSymbolHtml = ""; |
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if ($kbdSymbol !== null) { |
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$kbdSymbolHtml = '<span class="'.$inputKbdSymbolClass.'">'.$kbdSymbol.'</span>'; |
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} |
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$returnArray[] = '<kbd class="'.$inputKbdClass.'">'.$kbdSymbolHtml.$key.'</kbd>'; |
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} |
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return implode($inputJoinGlue, $returnArray); |
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} |
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300
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/** |
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301
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* Attempting to keep CSS on one line with scoped style. |
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302
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* |
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303
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* NOTICE: This is a rough estimate, font type, design, etc affects the results. |
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* |
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* @param string $text |
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306
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* @param string $cssSelector |
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307
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* @param int $fontSizePx |
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* @param int $minPageWidthPx |
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309
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* @return null|string Scoped style |
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310
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*/ |
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311
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public static function cssOneLineText($text, $cssSelector = "h1", $fontSizePx = 36, $minPageWidthPx = 320) |
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312
|
|
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{ |
|
313
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$countText = strlen($text)+1; |
|
314
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|
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|
|
315
|
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$fontWidth = ($fontSizePx / 2); |
|
316
|
|
|
|
|
317
|
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if ($minPageWidthPx < $countText) { |
|
318
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$minPageWidthPx = $countText; |
|
319
|
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} |
|
320
|
|
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if (($countText * $fontWidth) > $minPageWidthPx) { |
|
321
|
|
|
|
|
322
|
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$cssNewFontSizePx = round(($minPageWidthPx / $countText) * 2, 2); |
|
323
|
|
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$cssNewFontSizeVw = round((100/$countText) * 2, 2); |
|
324
|
|
|
|
|
325
|
|
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$cssBreakpointPx = round($countText * $fontWidth); |
|
326
|
|
|
|
|
327
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return '<style scoped>@media (max-width: '.$cssBreakpointPx.'px) { '.$cssSelector.' { font-size: '.$cssNewFontSizePx.'px; font-size: '.$cssNewFontSizeVw.'vw; } }</style>'; |
|
|
|
|
|
|
328
|
|
|
} |
|
329
|
|
|
return null; |
|
330
|
|
|
} |
|
331
|
|
|
} |
|
332
|
|
|
|
w3l /
holt45
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Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line.