我对function delete_all_between($char1, $char2, $string)很感兴趣，它会在给定的$string中查找$char1和$char2，并且如果找到了这样的内容，就会清除在这两个字符之间的子字符串，包括$char1和$char2本身。
例如:
$string = 'Some valid and <script>some invalid</script> text!';
delete_all_between('<script>', '</script>', $string);
'Some valid and text'; //note two spaces between 'and text'
有人有快速解决方案吗？
<?php
$string = 'Some valid and <script>some invalid</script> text!';
$out = delete_all_between('<script>', '</script>', $string);
print($out);
function delete_all_between($beginning, $end, $string) {
$beginningPos = strpos($string, $beginning);
$endPos = strpos($string, $end);
if ($beginningPos === false || $endPos === false) {
return $string;
}
$textToDelete = substr($string, $beginningPos, ($endPos + strlen($end)) - $beginningPos);
return delete_all_between($beginning, $end, str_replace($textToDelete, '', $string)); // recursion to ensure all occurrences are replaced
}
START和END之间的内容替换为空。感谢另一个SO线程！我认为substr()运行速度过慢。最好的方法是：
return substr($string, 0, $beginningPos) .
substr($string, $endPos + strlen($end));
/**
* deletes ALL the string contents between all the designated characters
* @param $start - pattern start
* @param $end - pattern end
* @param $string - input string,
* @return mixed - string
*/
function auxDeleteAllBetween($start, $end, $string) {
// it helps to assembte comma dilimited strings
$string = strtr($start. $string . $end, array($start => ','.$start, $end => chr(2)));
$startPos = 0;
$endPos = strlen($string);
while( $startPos !== false && $endPos !== false){
$startPos = strpos($string, $start);
$endPos = strpos($string, $end);
if ($startPos === false || $endPos === false) {
$run = false;
return $string;
}
$textToDelete = substr($string, $startPos, ($endPos + strlen($end)) - $startPos);
$string = str_replace($textToDelete, '', $string);
}
return $string;
}
/**
* This function is intended to replace
* //preg_match_all('/\{\%\s*([^\%\}]*)\s*\%\}|\{\{\s*([^\}\}]*)\s*\}\}/i', $this->_tplSubj, $matchesSubj);
* which did not give intended results for some reason.
*
* @param $inputTpl
* @return array
*/
private function auxGetAllTags($inputTpl){
$inputTpl = strtr($inputTpl, array('}}' => ','.chr(1), '{{' => chr(2)));
return explode(',',$this->auxDeleteAllBetween(chr(1),chr(2),$inputTpl));
}
$template = '<style>
td{border-bottom:1px solid #eee;}</style>
<p>Dear {{jedi}},<br>New {{padawan}} is waiting for your approval: </p>
<table border="0">
<tbody><tr><td><strong>Register as</strong></td><td>{{register_as}}, user-{{level}}</td></tr>
<tr><td><strong>Name</strong></td><td>{{first_name}} {{last_name}}</td></tr>...';
print_r($this->auxGetAllTags($template));
<?php
$string = 'Some </script> valid and <script>some invalid</script> text!';
$out = delete_all_between('<script>', '</script>', $string);
print($out);
function delete_all_between($beginning, $end, $string) {
$beginningPos = strpos($string, $beginning);
$tmpstring = substr($string, $beginningPos);
$endPos = strpos($tmpstring, $end);
if ($beginningPos === false || $endPos === false) {
return $string;
}
$textToDelete = substr($string, $beginningPos, ($endPos + strlen($end)) );
return delete_all_between($beginning, $end, str_replace($textToDelete, '', $string)); // recursion to ensure all occurrences are replaced
}
delete_all_between('<script>', '</script>', $string);, 你的回答提供了一种实现方法。考虑到回答展示的顺序是会变的（用户名也可能不同）：当你声称第一版本存在问题时，你指的是什么？有哪些问题，以及如何重现？ - greybeard$string = 'Some </script> valid and <script>some invalid</script> text!'; - AndreaTS我想在PHP中删除标签，因为我想在将HTML解析为DOMDocument之前删除未使用的标签。
这是我使用的代码。 光标在开始时为0。它只是程序中用于递归的。
function delete_all_betweenV2($cursor, $beginning, $end, $string, $retainSelf) {
echo '>>>> Start '.'<br>';
$beginningPos = strpos($string, $beginning, $cursor);
$endPos = strpos($string, $end, $beginningPos);
if ($beginningPos === false || $endPos === false) {
echo '>>>> End '.'<br>';
return $string;
}
if($endPos >= strlen($string)) {
echo '>>>> End '.'<br>';
return $string;
}
$lenOfBeginning = strlen($beginning);
$lenOfEnd = strlen($end);
$result = $string;
if($retainSelf) {
echo 'b4 input String: '.$string.'<br>';
echo 'b4 cursor = : '.$cursor. '<br>';
echo 'b4 string: '.$string. '<br>';
echo 'b4 beginning Pos: '.$beginningPos.'<br>';
echo 'b4 end Pos: '.$endPos.'<br>';
echo 'b4 length to be cut is: '.(($endPos - $lenOfEnd) - $beginningPos).'<br>';
if($cursor > 0) {
echo 'cursor is greater than 0'.'<br>';
$textToDelete = substr($string, $beginningPos + $lenOfBeginning, ($endPos - $lenOfEnd) - $beginningPos);
} else {
echo 'cursor is NOT greater than 0'.'<br>';
$textToDelete = substr($string, $beginningPos + $lenOfBeginning, ($endPos - $lenOfEnd) - $beginningPos);
}
echo 'TextToDelete:'.$textToDelete.'<br>';
//$stringStart = substr($string, 0, $beginningPos + $lenOfBeginning);
//echo $stringStart.'<br>';
//$stringTail = substr($string, $endPos, strlen($string));
//echo $stringTail.'<br>';
$result = str_replace($textToDelete, '', $string);
$cursor = $beginningPos + $lenOfBeginning; // just make sure that the cursor search next character/word
echo 'After cursor = : '.$cursor. '<br>';
echo 'After result: '.$result. '<br>';
echo 'After len of result: '.strlen($result). '<br>';
} else {
//$stringStart = substr($string, 0, $beginningPos);
//echo $stringStart.'<br>';
//$stringTail = substr($string, $endPos + $lenOfEnd, strlen($string));
//echo $stringTail.'<br>';
$cursor = 0;
$textToDelete = substr($string, $beginningPos, ($endPos + $lenOfEnd) - $beginningPos);
echo 'TextToDelete:'.$textToDelete.'<br>';
$result = str_replace($textToDelete, '', $string);
}
echo '>>>> End '.'<br>';
return delete_all_betweenV2($cursor, $beginning, $end, $result, $retainSelf);
}
<script type='abc'>）和处理大小写不敏感，我有以下代码... function delete_all_between(string $html, string $tag) {
$startTag="<$tag ";
$endTag="</$tag>";
$html =str_ireplace("<$tag>", "<$tag >", $html);
$startPos = stripos($html, $startTag);
$tmpStr = substr($html, $startPos);
$endPos = stripos($tmpStr, $endTag);
if ($startPos === false || $endPos === false) {
return $html;
}
$textToDelete = substr($html, $startPos, ($endPos + strlen($startTag))+1 );
return delete_all_between(str_replace($textToDelete, '', $html), $tag); // recursion to ensure all occurrences are replaced
}
请查看 http://sandbox.onlinephpfunctions.com/code/1b984b61cfd1c9cea4c6eef1d765ff387a4cd9e9 以运行此 PHP 沙盒。
我有一个字符串，其中包含多个类似于<start>xyz<end>的标签。我可以使用以下代码将其删除：
{{preg_replace('/(\<start>.+?)+(\<end>)/i', "", $string)}}
注意：如果您或是一些特殊字符，如$、@等，请使用反斜杠进行转义，例如\<start>或<end>。因此最终结果应该像这样：
{{preg_replace('/(\\\<start>.+?)+(\\\<end>)/i', "", $string)}}
更精确地说：
{{preg_replace('/(\\$.+?)+(\\@)/i', "", $string)}}
您可以使用双重 str_replace() 函数
$q = str_replace('<script>', '', $string);
$p = str_replace('some invalid', '', $q);
echo $p;
strip_tags来处理。请注意不要改变原意，使翻译更加通俗易懂。 - user229044