我使用这个PHP代码大致每120个字符分割一个字符串。它在最近的空间分裂。但它分割HTML和XML实体,因此有时会输出id="id">
之类的内容。我怎样才能使它忽略XML和HTML实体,但不会删除它们。
function splitWords($string, $max = 1)
{
$words = preg_split( '/\s/', $string );
$lines = array();
$line = '';
foreach ( $words as $k => $word ) {
$newLine = $line . ' ' . $word;
$length = strlen( $newLine );
if ( $length <= $max ) {
$line .= ' ' . $word;
} else if ( $length > $max ) {
if ( !empty( $line ) ) {
$lines[] = trim( $line );
}
$line = $word;
} else {
$lines[] = trim( $line ) . ' ' . $word;
$line = '';
}
}
$lines[] = ( $line = trim( $line ) ) ? $line : $word;
return $lines;
}
答案 0 :(得分:1)
我会将您的split命令更改为使用标记子字符串作为分隔符或空格。
这个基本的正则表达式将会:
<\/?\w+(?=\s|>)(?:[^>=|&)]*|=\'[^\']*\'|="[^"]*"|=[^\'"][^\s>]*)*>|\s
使用此正则表达式,您可以执行各种疯狂的操作,具体取决于您放置捕获paranthesse的位置以及preg_split中使用的选项。
请注意,在此演示中,锚标记有一些非常困难的边缘情况。
PHPv5.4.4代码
<?php
$string = ' <a onmouseover=\' <a href="notreal.com">This is text inside an attribute</a> \' href=url.com>This is some inner text</a>This is outer text.
<a onmouseover=\' a=1; href="www.NotYourURL.com" ; if (3 <a && href="www.NotYourURL.com" && id="revSAR" && 6 > 3) { funRotate(href) ; } ; \' href=\'http://InterestedURL.com\' id=\'revSAR\'>
I am the inner text too.
</a>
';
echo "split retains all spaces\n";
$array = preg_split ('/(<\/?\w+(?=\s|>)(?:[^>=|&)]*|=\'[^\']*\'|="[^"]*"|=[^\'"][^\s>]*)*>|\s)/', $string, 0, PREG_SPLIT_DELIM_CAPTURE);
echo implode(",",$array);
echo "\n\nsplit ignores spaces\n";
$array = preg_split ('/(<\/?\w+(?=\s|>)(?:[^>=|&)]*|=\'[^\']*\'|="[^"]*"|=[^\'"][^\s>]*)*>)|\s/', $string, 0, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
echo implode(",",$array);
echo "\n\nsplit ignores tags and spaces\n";
$array = preg_split ('/<\/?\w+(?=\s|>)(?:[^>=|&)]*|=\'[^\']*\'|="[^"]*"|=[^\'"][^\s>]*)*>|\s/', $string, 0, PREG_SPLIT_NO_EMPTY);
echo implode(",",$array);
echo "\n\nsplit ignores tags and retains spaces\n";
$array = preg_split ('/<\/?\w+(?=\s|>)(?:[^>=|&)]*|=\'[^\']*\'|="[^"]*"|=[^\'"][^\s>]*)*>|(\s)/', $string, 0, PREG_SPLIT_DELIM_CAPTURE);
echo implode(",",$array);
<强>输出强>
你可能最感兴趣的是第三个选项“split ignores tags and spaces”
split retains all spaces
, ,,<a onmouseover=' <a href="notreal.com">This is text inside an attribute</a> ' href=url.com>,This, ,is, ,some, ,inner, ,text,</a>,This, ,is, ,outer, ,text.,
,,
,, ,,<a onmouseover=' a=1; href="www.NotYourURL.com" ; if (3 <a && href="www.NotYourURL.com" && id="revSAR" && 6 > 3) { funRotate(href) ; } ; ' href='http://InterestedURL.com' id='revSAR'>,,
,, ,, ,I, ,am, ,the, ,inner, ,text, ,too.,
,, ,, ,,</a>,,
,
split ignores spaces
<a onmouseover=' <a href="notreal.com">This is text inside an attribute</a> ' href=url.com>,This,is,some,inner,text,</a>,This,is,outer,text.,<a onmouseover=' a=1; href="www.NotYourURL.com" ; if (3 <a && href="www.NotYourURL.com" && id="revSAR" && 6 > 3) { funRotate(href) ; } ; ' href='http://InterestedURL.com' id='revSAR'>,I,am,the,inner,text,too.,</a>
split ignores tags and spaces
This,is,some,inner,text,This,is,outer,text.,I,am,the,inner,text,too.
split ignores tags and retains spaces
, ,,This, ,is, ,some, ,inner, ,text,This, ,is, ,outer, ,text.,
,,
,, ,,,
,, ,, ,I, ,am, ,the, ,inner, ,text, ,too.,
,, ,, ,,,
,