[PHP] Usage of strlen(tuf8_decode()) and /u regex modifier
Hello,
As indicated below, the strlen(tuf8_decode()) and the /u regex
modifier do not work as per my understanding.
1) What is my misunderstanding?
?php
$the_string = '#1052;#1072;#1088;#1080;#1085;#1072;
#1054;#1088;#1083;#1086;#1074;#1072;';
echo pauthor (85 bytes):$the_string, . strlen($the_string) . ','
. strlen( utf8_decode( $the_string ) ) . ',' .
strlen( utf8_decode( utf8_encode($the_string) ) ) . ',' . /p;
// all the number echoed are 85, I expected at least one to be 13
$max_length = 20;
$is_short = preg_match( '/^.{1,$max_length}$/u', uft8_encode(
$the_string ) ) );
// expect the above to return 1
$max_length = 10;
$is_short = preg_match( '/^.{1,$max_length}$/u', uft8_encode(
$the_string ) ) );
// expect the above to return 0
?
More generally, given a string $the_string:
2) how to determine what encoding is being used?
3) how to determine the number of visible characters?
4) if it has more than N visible characters, how to
truncate it after N visible characters?
Thanks!
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[PHP] Usage of strlen(tuf8_decode()) and /u regex modifier
Hello,
As indicated below, the strlen(tuf8_decode()) and the /u regex
modifier do not work as per my understanding.
1) What is my misunderstanding?
?php
$the_string = '#1052;#1072;#1088;#1080;#1085;#1072;
#1054;#1088;#1083;#1086;#1074;#1072;';
echo pauthor (85 bytes):$the_string, . strlen($the_string) . ','
. strlen( utf8_decode( $the_string ) ) . ',' .
strlen( utf8_decode( utf8_encode($the_string) ) ) . ',' . /p;
// all the number echoed are 85, I expected at least one to be 13
$max_length = 20;
$is_short = preg_match( '/^.{1,$max_length}$/u', uft8_encode(
$the_string ) ) );
// expect the above to return 1
$max_length = 10;
$is_short = preg_match( '/^.{1,$max_length}$/u', uft8_encode(
$the_string ) ) );
// expect the above to return 0
?
More generally, given a string $the_string:
2) how to determine what encoding is being used?
3) how to determine the number of visible characters?
4) if it has more than N visible characters, how to
truncate it after N visible characters?
Thanks!
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
