<?php
-
/**
- * @file src/Util/Strings.php
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
*/
namespace Friendica\Util;
* @param array $chars
* @return bool
*/
- public static function startsWith($string, array $chars)
+ public static function startsWithChars($string, array $chars)
{
$return = in_array(substr(trim($string), 0, 1), $chars);
return $return;
}
+ /**
+ * Check if the first string starts with the second
+ *
+ * @param string $string
+ * @param string $start
+ * @return bool
+ */
+ public static function startsWith(string $string, string $start)
+ {
+ $return = substr_compare($string, $start, 0, strlen($start)) === 0;
+
+ return $return;
+ }
+
/**
* Returns the regular expression string to match URLs in a given text
*
return $pathItem;
}
+
+ /**
+ * Multi-byte safe implementation of substr_replace where $start and $length are character offset and count rather
+ * than byte offset and counts.
+ *
+ * Depends on mbstring, use default encoding.
+ *
+ * @param string $string
+ * @param string $replacement
+ * @param int $start
+ * @param int|null $length
+ * @return string
+ * @see substr_replace()
+ */
+ public static function substringReplace(string $string, string $replacement, int $start, int $length = null)
+ {
+ $string_length = mb_strlen($string);
+
+ $length = $length ?? $string_length;
+
+ if ($start < 0) {
+ $start = max(0, $string_length + $start);
+ } else if ($start > $string_length) {
+ $start = $string_length;
+ }
+
+ if ($length < 0) {
+ $length = max(0, $string_length - $start + $length);
+ } else if ($length > $string_length) {
+ $length = $string_length;
+ }
+
+ if (($start + $length) > $string_length) {
+ $length = $string_length - $start;
+ }
+
+ return mb_substr($string, 0, $start) . $replacement . mb_substr($string, $start + $length, $string_length - $start - $length);
+ }
}