PHP correctly parse UTF-8 string _php Tutorial

PHP correctly parse UTF-8 string have a friend you need to refer to.

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$str = ' Today very happy, all decided to go to KFC to eat cola chicken wings!!! '; /* $str is the string to intercept $len is the number of characters intercepted */ function Utf8sub ($STR, $len) { if ($len <= 0) { Return '; } $offset = 0; The offset at which high-level bytes are intercepted $chars = 0; The number of characters to intercept $res = "; Storing the resulting string for interception while ($chars < $len) { Takes the first byte of a string first Convert it to decimal and then into binary $high = Ord (substr ($str, $offset, 1)); echo ' $high = '. $high. ' '; if ($high = = null) {//If the fetch high is NULL, the proof has been taken to the end and the direct break Break } if ($high >>2) = = = 0x3F) {//moves the high position to the right 2 bits, and the binary 111111 compares, the same takes 6 bytes Interception of 2 bytes $count = 6; }else if (($high >>3) = = = 0x1F) {//moves the high position to the right 2 bits, compares the binary 11111, and takes 5 bytes in the same Interception of 3 bytes $count = 5; }else if (($high >>4) = = = 0xF) {//moves the high position to the right 2 bits, compares the binary 1111, and takes 4 bytes in the same Interception of 4 bytes $count = 4; }else if (($high >>5) = = = 0x7) {//moves the high position to the right 2 bits, compares the binary 111, and takes 3 bytes in the same Interception of 5 bytes $count = 3; }else if (($high >>6) = = = 0x3) {//moves the high position to the right 2 bits, compares the binary 11, and takes 2 bytes in the same Interception of 6 bytes $count = 2; }else if (($high >>7) = = = 0x0) {//moves the high position to the right 2 bits, compares the binary 0, and takes 1 bytes in the same $count = 1; } echo ' $count = '. $count. ' '; $res. = substr ($str, $offset, $count); Remove a character and connect to a $res string $chars + = 1; Number of characters intercepted +1 $offset + = $count; Intercept high offset backward $count bytes } return $res; } Echo utf8sub ($STR, 100);

http://www.bkjia.com/PHPjc/632169.html www.bkjia.com true http://www.bkjia.com/PHPjc/632169.html techarticle php correctly parse UTF-8 string have a friend you need to refer to. The code below copies the code $STR = ' Today very happy, all decided to go to KFC to eat cola chicken wings!!! '; /* $STR is the word to be intercepted ...

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