PHP intercept Chinese characters (utf-8 format) functions

/** @UTF-8 Chinese character truncation program @http://bbs.it-home.org */ $STR = "321 This is the test string"; $str 1 = "() ()"; Echo subutf8str ($str, 0, 3). " "; Echo subutf8str ($str, 0,4). " "; Echo subutf8str ($str 1,0,4). " "; Echo subutf8str ($str 1,0,10). " "; function Subutf8str ($str, $start =0, $length =80) { $cur _len = 0; People understand the length of the string $all _len = strlen ($STR); Machine Understanding String Length if ($length > $all _len) { return $str; } for ($i = 0; $i < $all _len;) { if ($cur _len = = $start) { Break } if (Ord ($str [$i]) > 127) { $i + = 3; }else{ $i + = 1; } $cur _len + +; } $start _pos = $i; $temp _pos = $cur _len; for (; $cur _len-$temp _pos < $length;) { if ($i >= $all _len) Break if (Ord ($str [$i]) > 127) { $i + = 3; }else{ $i + = 1; } $cur _len + +; } $end _pos = $i; Return substr ($str, $start _pos, $end _pos); } ?> Copy Code PHP comes with a library of functions that deal with strings, it is recommended that we go into the study, a lot of practice.

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