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<?php |
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/* |
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* The MIT License (MIT) |
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* Copyright © 2017 Marcos Lois Bermudez <[email protected]> |
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* * |
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated |
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* documentation files (the “Software”), to deal in the Software without restriction, including without limitation |
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* the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, |
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions: |
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* * |
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions |
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* of the Software. |
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* * |
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* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED |
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* TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF |
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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* DEALINGS IN THE SOFTWARE. |
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*/ |
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namespace TTIC\Commons; |
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/** |
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* Common string utility class. |
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* Some of them based on source code from: |
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* http://stackoverflow.com/questions/834303/startswith-and-endswith-functions-in-php#answer-834355 |
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* |
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* @package TTIC |
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* @author Marcos Lois Bermúdez <[email protected]> |
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*/ |
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abstract class StringUtils |
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{ |
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/** |
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* Check if a string has a prefix. |
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* |
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* @param $haystack string The input string. |
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* @param $needle string The string to search. |
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* @param bool $caseInsensitive If string comparision is made case insensitive. |
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* @return bool true if the needle if found, false otherwise |
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*/ |
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public static function startsWith($haystack, $needle, $caseInsensitive = false) |
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{ |
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$length = strlen($needle); |
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if ($length == 0) { |
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return true; |
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} |
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return ($caseInsensitive ? (strcasecmp(substr($haystack, 0, $length), $needle) == 0) |
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: (substr($haystack, 0, $length) === $needle)); |
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} |
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/** |
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* Check if a string has a suffix. |
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* |
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* @param $haystack string The input string. |
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* @param $needle string The string to search. |
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* @param bool $caseInsensitive If string comparision is made case insensitive. |
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* @return bool true if the needle if found, false otherwise |
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*/ |
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public static function endsWith($haystack, $needle, $caseInsensitive = false) |
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{ |
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$length = strlen($needle); |
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if ($length == 0) { |
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return true; |
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} |
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return ($caseInsensitive ? (strcasecmp(substr($haystack, -$length), $needle) == 0) |
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: (substr($haystack, -$length) === $needle)); |
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} |
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/** |
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* Get the common prefix of a list of strings. |
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* |
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* @param array $strings List of string to get prefix of. |
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* @param bool $caseInsensitive If string comparision is made case insensitive. |
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* @return string The common prefix to all strings or a empty string. |
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*/ |
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public static function commonPrefix(array $strings, $caseInsensitive = false) |
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{ |
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sort($strings); |
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$s1 = array_shift($strings); |
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$s2 = array_pop($strings); |
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$len = min(strlen($s1), strlen($s2)); |
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for ($i = 0; $i < $len && ($caseInsensitive ? strcasecmp($s1[$i], $s2[$i]) == 0 : $s1[$i] === $s2[$i]); $i++); |
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return substr($s1, 0, $i); |
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} |
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} |
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teratic /
php-commons
