php中英文字符串截取函数(包括html)
这里提供一款支持中文汉字与英文混合在一起的截取功能,包括对html标签等进来处理,下面我们来看看这款截取函数吧.
中英文字符串截取函数(包括html),实例代码如下:
function get_word( $string , $length , $dot = '..' , $charset = 'gbk' ) { if ( strlen ( $string ) <= $length ) { return $string ; } $string = str_replace ( array ( ' ' , ' ' , '&' , '"' , '<' , '>' ), array ( '' , '' , '&' , '"' , '<' , '>' ), $string ); $strcut = '' ; 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 ]; } } return $strcut . $dot ; } $str = "欢迎 visit 简明 nowamagic" ; $str_result = get_word( $str , 12); echo $str_result ;查看更多关于php中英文字符串截取函数(包括html) - php函数的详细内容...
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