(Classic) PHP string interception

黄舟
Release: 2023-03-05 12:40:01
Original
1144 people have browsed it

案例分析如下:

字符串截取是一个非常常见的编程任务,而往往带中文的字符串截取会经常用到。虽然不难,但是自己写函数实现又耗费时间,这里介绍一个比较好用的字符串截取函数,能够胜任基本的需求了

=224 ) { $stringTMP = substr($string,$i,3); $i = $i + 3; } elseif( ord($stringTMP) >=192 ) { $stringTMP = substr($string,$i,2); $i = $i + 2; } else { $i = $i + 1; } $stringLast[] = $stringTMP; } $stringLast = implode("",$stringLast); if($append) { $stringLast .= "..."; } return $stringLast; } } $string = "简明现代魔法 —— 专注于互联网主流的各种技术"; $length = "27"; $append = true; echo sysSubStr($string,$length,$append); # 结果输出 简明现代魔法 —— 专... ?>
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1.截取GB2312中文字符串:

 0xa0) { $tmpstr .= substr($str, $i, 2); $i++; } else $tmpstr .= substr($str, $i, 1); } return $tmpstr; } ?>
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2.截取utf8编码的多字节字符串:

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3.UTF-8、GB2312都支持的汉字截取函数:

 $sublen) return join('', array_slice($t_string[0], $start, $sublen))."..."; return join('', array_slice($t_string[0], $start, $sublen)); } else { $start = $start*2; $sublen = $sublen*2; $strlen = strlen($string); $tmpstr = ''; for($i=0; $i< $strlen; $i++) { if($i>=$start && $i< ($start+$sublen)) { if(ord(substr($string, $i, 1))>129) { $tmpstr.= substr($string, $i, 2); } else { $tmpstr.= substr($string, $i, 1); } } if(ord(substr($string, $i, 1))>129) $i++; } if(strlen($tmpstr)< $strlen ) $tmpstr.= "..."; return $tmpstr; } } $str = "abcd需要截取的字符串"; echo cut_str($str, 8, 0, 'gb2312'); ?>
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以上就是(经典篇)PHP字符串截取的内容,更多相关内容请关注PHP中文网(m.sbmmt.com)!


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