PHP Custom Function Intercept Chinese character length example

function Msubstr ($str, $start, $len) { $strlen = $start + $len; for ($i =0; $i < $strlen; $i + +) { if (Ord (substr ($str, $i, 1)) >0xa0) { $tmpstr. =substr ($str, $i, 2); $i + +; } else $tmpstr. =substr ($str, $i, 1); } return $tmpstr; } Copy Code Call: $str = "This character is very long, ^_^"; $Short _str=showshort ($STR, 4);//intercept the first 4 characters, the result is: this character ... Echo "$Short _str"; Function csubstr ($str, $start, $len) { $strlen =strlen ($STR); $clen = 0; for ($i =0; $i < $strlen; $i + +, $clen + +) { if ($clen >= $start + $len) Break if (Ord (substr ($str, $i, 1)) >0xa0) { if ($clen >= $start) $tmpstr. =substr ($str, $i, 2); $i + +; } bbs.it-home.org Else { if ($clen >= $start) $tmpstr. =substr ($str, $i, 1); } } return $tmpstr; } Function Showshort ($STR, $len) { $tempstr = csubstr ($str, 0, $len); if ($str <> $tempstr) $tempstr. = "..."; To what end, modify here can be. return $tempstr; } Copy Code Here is a more concise way to intercept the length of Chinese characters: $len = 19; $text = "How will the long title of the news show only a few words in front, followed by ..." To replace it? "; echo strlen ($text) <= $len? $text: (substr ($text, 0, $len). chr (0). " ...."); Copy Code

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