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StringUtilities.php
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<?php
declare(strict_types=1);
namespace Keruald\OmniTools\Strings\Multibyte;
class StringUtilities {
/**
* Pads a multibyte string to a certain length with another string
*
* @param string $input the input string
* @param int $padLength the target string size
* @param string $padString the padding characters (optional, default is space)
* @param int $padType STR_PAD_RIGHT, STR_PAD_LEFT, or STR_PAD_BOTH (optional, default is STR_PAD_RIGHT)
* @param string $encoding the character encoding (optional)
*
* @return string the padded string
*
*/
public static function pad (
string $input,
int $padLength,
string $padString = ' ',
int $padType = STR_PAD_RIGHT,
string $encoding = ''
) : string {
return (new StringPad)
->setInput($input)
->setPadLength($padLength)
->setPadString($padString)
->setPadType($padType)
->setEncoding($encoding ?: mb_internal_encoding())
->pad();
}
public static function isSupportedEncoding (string $encoding) : bool {
foreach (mb_list_encodings() as $supportedEncoding) {
if ($encoding === $supportedEncoding) {
return true;
}
}
return false;
}
public static function startsWith (string $string, string $start) {
$length = mb_strlen($start);
return mb_substr($string, 0, $length) === $start;
}
public static function endsWith (string $string, string $end) {
$length = mb_strlen($end);
return $length === 0 || mb_substr($string, -$length) === $end;
}
public static function contains (string $string, string $needle) : bool {
return strpos($string, $needle) !== false;
}
/**
* Encode a string using a variant of the MIME base64 compatible with URLs.
*
* The + and / characters used in base64 are replaced by - and _.
* The = padding is removed.
*
* @param string $string The string to encode
* @return string The encoded string
*/
public static function encodeInBase64 (string $string) : string {
return str_replace(
['+', '/', '='],
['-', '_', ''],
base64_encode($string)
);
}
/**
* Decode a string encoded with StringUtilities::encodeInBase64
*
* @param string $string The string to decode
* @return string The decoded string
*/
public static function decodeFromBase64 (string $string) : string {
$toDecode = str_replace(['-', '_'], ['+', '/'], $string);
return base64_decode($toDecode);
}
}

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