Find a space in UTF-8 strings, do I need mb_strpos?

Question

I have a string in UTF-8.

$string = "ãçé êíõ";

I need to find the position of the space. I have to use mb_strpos($string,' '); ?

score 3 · Accepted Answer · answered Dec 19 '11 at 11:03

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If you want to find the character position of the space, then yes. strpos will not do because the byte value 0x20 (UTF-8 code point for space) can also be encountered as part of a code point encoded over multiple bytes.

Also, do not forget to specify the encoding -- either explicitly on the mb_strpos call or by setting a default with mb_internal_encoding.

answered Dec 19 '11 at 11:03

Jon

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Did a test and strpos returns 6 :), so yes I need mb_strpos – dynamic Dec 19 '11 at 11:05

score 2 · Answer 2 · answered Dec 19 '11 at 11:09

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Note that just using mb_strpos may not be sufficient - there are several code points that display as a space. See e.g. this list - the second most common space character (second to the default ASCII space U+0020, decimal 32) is the nonbreakable space (U+00A0); you may need to check for that one, too - or replace it into the "usual" space character.

answered Dec 19 '11 at 11:09

Piskvor left the building

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See also: http://stackoverflow.com/questions/3636559/strange-utf8-string-comparison – Piskvor left the building Dec 19 '11 at 11:28

Find a space in UTF-8 strings, do I need mb_strpos?

2 Answers2