Php Chinese string intercepting php Chinese string code

Php Chinese string intercepting php Chinese string code

/** @ Truncate a Chinese string for GB2312 encoding @ Http://bbs.it-home.org */ Function FSubstr ($ title, $ start, $ len = "", $ magic = true) { $ Length = 0; If ($ len = "") $ len = strlen ($ title ); // Judge the starting position as incorrect If ($ start> 0) { $ Cnum = 0; For ($ I = 0; $ I <$ start; $ I ++) { If (ord (substr ($ title, $ I, 1) >=128) $ cnum ++; } If ($ cnum % 2! = 0) $ start --; Unset ($ cnum ); } If (strlen ($ title) <= $ len) return substr ($ title, $ start, $ len ); $ Alen = 0; $ Blen = 0; $ Realnum = 0; For ($ I = $ start; $ I { $ Ctype = 0; $ Cstep = 0; $ Cur = substr ($ title, $ I, 1 ); If ($ cur = "&") { If (substr ($ title, $ I, 4) = "<") { $ Cstep = 4; $ Length + = 4; $ I + = 3; $ Realnum ++; If ($ magic) { $ Alen ++; } } Else if (substr ($ title, $ I, 4) = "> ") { $ Cstep = 4; $ Length + = 4; $ I + = 3; $ Realnum ++; If ($ magic) { $ Alen ++; } } Else if (substr ($ title, $ I, 5) = "&") { $ Cstep = 5; $ Length + = 5; $ I + = 4; $ Realnum ++; If ($ magic) { $ Alen ++; } } Else if (substr ($ title, $ I, 6) = """) { $ Cstep = 6; $ Length + = 6; $ I + = 5; $ Realnum ++; If ($ magic) { $ Alen ++; } } Else if (substr ($ title, $ I, 6) = "'") { $ Cstep = 6; $ Length + = 6; $ I + = 5; $ Realnum ++; If ($ magic) { $ Alen ++; } } Else if (preg_match ("/& # (\ d +);/I", substr ($ title, $ I, 8), $ match )) { $ Cstep = strlen ($ match [0]); $ Length + = strlen ($ match [0]); $ I + = strlen ($ match [0])-1; $ Realnum ++; If ($ magic) { $ Blen ++; $ Ctype = 1; } } } Else { If (ord ($ cur) >=128) { $ Cstep = 2; $ Length + = 2; $ I + = 1; $ Realnum ++; If ($ magic) { $ Blen ++; $ Ctype = 1; } } Else { $ Cstep = 1; $ Length + = 1; $ Realnum ++; If ($ magic) { $ Alen ++; } } } If ($ magic) { If ($ blen * 2 + $ alen) = ($ len * 2) break; If ($ blen * 2 + $ alen) = ($ len * 2 + 1 )) { If ($ ctype = 1) { $ Length-= $ cstep; Break; } Else { Break; } } } Else { If ($ realnum = $ len) break; } } Unset ($ cur ); Unset ($ alen ); Unset ($ blen ); Unset ($ realnum ); Unset ($ ctype ); Unset ($ cstep ); Return substr ($ title, $ start, $ length ); } ?> Copy the above code and test it on your php platform. if you have more hands-on operations, the horizontal improvement will be faster. Programmer's house, a good friend on your way to learning.