Copy Code code as follows:
Define (CHARSET, ' UTF-8 '); System default encoding
/**
* Cut strings according to Chinese
* @param $string-strings
* @param $length-length
* @param $doc-abbreviated suffix
* @return Returns the string with the ellipsis being cut well
*/
function Cutstr ($string, $length, $dot = ' ... ') {
if (strlen ($string) <= $length) {
return $string;
}
$pre = Chr (1);
$end = Chr (1);
$string = str_replace (Array (' & ', ' "'", ' < ', ' > '), Array ($pre.) & '. $end, $pre. '"' . $end, $pre. ' < '. $end, $pre. ' > '. $end), $string);
$strcut = ';
if (Strtolower (CHARSET) = = ' Utf-8 ') {
$n = $tn = $noc = 0;
while ($n < strlen ($string)) {
$t = Ord ($string [$n]);
if ($t = = 9 | | $t = 10 | | (<= $t && $t <= 126)) {
$tn = 1;
$n + +;
$noc + +;
} elseif (194 <= $t && $t <= 223) {
$tn = 2;
$n + 2;
$noc + 2;
} elseif (224 <= $t && $t <= 239) {
$tn = 3;
$n + 3;
$noc + 2;
ElseIf (<= $t && $t <= 247) {
$tn = 4;
$n + 4;
$noc + 2;
} elseif (248 <= $t && $t <= 251) {
$tn = 5;
$n + 5;
$noc + 2;
} elseif ($t = = 252 | | $t = = 253) {
$tn = 6;
$n + 6;
$noc + 2;
} else {
$n + +;
}
if ($noc >= $length) {
Break
}
}
if ($noc > $length) {
$n-= $tn;
}
$strcut = substr ($string, 0, $n);
} else {
for ($i = 0; $i < $length; $i + +) {
$strcut. = Ord ($string [$i]) > 127? $string [$i]. $string [+ + $i]: $string [$i];
}
}
$strcut = Str_replace (Array ($pre. ' & '. $end, $pre. '"' . $end, $pre. ' < '. $end, $pre. ' > '. $end), Array (' & ', ' "", ' < ', ' > '), $strcut);
$pos = Strrpos ($strcut, Chr (1));
if ($pos!== false) {
$strcut = substr ($strcut, 0, $pos);
}
Return $strcut. $dot;
}
