PHP Chinese string intercept php intercept Chinese string code

/** @ Intercept Chinese strings for GB2312 encoding @http://bbs.it-home.org */ function Fsubstr ($title, $start, $len = "", $magic =true) { $length = 0; if ($len = = "") $len = strlen ($title); Judging starting as an incorrect location if ($start > 0) { $cnum = 0; for ($i =0; $i < $start; $i + +) { if (Ord (substr ($title, $i, 1)) >=) $cnum + +; } if ($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)) 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 Code Copy the above code, test it in your PHP platform, do more hands-on, and improve the level faster. The programmer's home, you learn the good friend on the road.

