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Digg  iconv_strlen
Returns the character count of string
(PHP 5)
Code Examples / Notes » iconv_strlenhfuecks @ nospam org
If iconv_strlen is passed a UTF-8 string containing badly formed sequences, it will return FALSE. This is in contrast to mb_strlen of the behaviour of utf8_decode, which strip out any bad sequences; <?php # UTF-8 string containing bad sequence: \xe9 $str = "Iñtërnâtiôn\xe9àlizætiøn"; print "mb_strlen: ".mb_strlen($str,'UTF-8')."\n"; print "strlen/utf8_decode: ".strlen(utf8_decode($str))."\n"; print "iconv_strlen: ".iconv_strlen($str,'UTF-8')."\n"; ?> Displays; mb_strlen: 20 strlen/utf8_decode: 20 iconv_strlen: (PHP 5.0.5) As such it is being "stricter" than mb_strlen and it may mean you need to check for invalid sequences first. A quick way to check is to exploit the behaviour of the PCRE extension (see notes on pattern modifiers); <?php if (preg_match('/^.{1}/us',$str,$ar) != 1) { die("string contains invalid UTF-8"); } ?> A slower but stricter check (regex) can be found at: http://www.w3.org/International/questions/qa-forms-utf-8 Similiar applies to iconv_substr, iconv_strpos and iconv_strrpos |
