note 81722 added to function.mb-strpos
| From: | brendel at krumedia dot de | Date: | Tue, 11 Mar 2008 12:42:17 +0000 |
| Subject: | note 81722 added to function.mb-strpos | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-136925@lists.php.net to get a copy of this message | ||
mb_strpos() used in a loop on a long string may become very slow even if you provide the $offset.
Unlike strpos(), mb_strpos() has to skip the number of characters
every call specified by $offset to get the real byte position used internally. (Whereas strpos can
just add the offset.)
If your encoding is UTF-8 and you try to find only single characters with ordinal <= 127 you may
still use strpos(), substr(), ... This works cause every byte of a UTF-8 sequence is >= 128.
Greetz maz
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Manual Page -- http://www.php.net/manual/en/function.mb-strpos.php
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