PHP source code analysis: DZX1.5 string truncation function cutstr usage_PHP tutorial

Usage of DZX1.5 string truncation function cutstr in php source code analysis

This article describes the usage of DZX1.5 string truncation function cutstr in php source code analysis. Share it with everyone for your reference. The specific analysis is as follows:

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/** * 函数来源DZX1.5，文件所在 /source/function/function_core.php */ define('CHARSET','UTF-8'); function cutstr($string, $length, $dot="...") { if(strlen($string)<=$length) { return $string; } if(strtolower(CHARSET) == "utf-8") { $n = $tn = $noc = 0; while($n < strlen($string)) { $t = ord($string[$n]); if($t == 9 || $t == 10 || (32 <= $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(240 <= $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]; } } $pos = strrpos($strcut, chr(1)); if($pos !== false) { $strcut = substr($strcut,0,$pos); } return $strcut.$dot; } $string = '测试数据库ablci102020@(#)!)!测试劳动力ddk'; echo cutstr($string,15); /*End of php*/

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<🎜>/**<🎜> <🎜>* The function source is DZX1.5, the file is located at /source/function/function_core.php<🎜> <🎜>*/<🎜> <🎜>define('CHARSET','UTF-8');<🎜> <🎜>function cutstr($string, $length, $dot="...") {<🎜> <🎜>if(strlen($string)<=$length) {<🎜> <🎜>return $string;<🎜> <🎜>}<🎜> <🎜>if(strtolower(CHARSET) == "utf-8") {<🎜> <🎜>$n = $tn = $noc = 0;<🎜> <🎜>while($n < strlen($string)) {<🎜> <🎜>$t = ord($string[$n]);<🎜> <🎜>if($t == 9 || $t == 10 || (32 <= $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(240 <= $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]; } } $pos = strrpos($strcut, chr(1)); if($pos !== false) { $strcut = substr($strcut,0,$pos); } return $strcut.$dot; } $string = 'Test database ablci102020@(#)!)!Test workforce ddk'; echo cutstr($string,15); /*End of php*/

The running results are as follows: Test database ablci1020... I hope this article will be helpful to everyone’s PHP programming http://www.bkjia.com/PHPjc/1018380.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1018380.htmlTechArticlephp source code analysis of DZX1.5 string truncation function cutstr usage This article illustrates the use of DZX1.5 of php source code analysis String truncation function cutstr usage. Share it with everyone for your reference. Detailed analysis...