highlight the word in the string, if it contains the keyword
how write the script, which menchion the whole word, if it contain the keyword? example: keyword "fun", string - the bird is funny, result - the bird is * funny*. i do the following
$str = "my bird is funny";
$keyword = "fun";
$st开发者_开发技巧r = preg_replace("/($keyword)/i","<b>$1</b>",$str);
but it menshions only keyword. my bird is funny
Try this:
preg_replace("/\w*?$keyword\w*/i", "<b>$0</b>", $str)
\w*? matches any word characters before the keyword (as least as possible) and \w* any word characters after the keyword.
And I recommend you to use preg_quote to escape the keyword:
preg_replace("/\w*?".preg_quote($keyword)."\w*/i", "<b>$0</b>", $str)
For Unicode support, use the u flag and \p{L} instead of \w:
preg_replace("/\p{L}*?".preg_quote($keyword)."\p{L}*/ui", "<b>$0</b>", $str)
You can do the following:
$str = preg_replace("/\b([a-z]*${keyword}[a-z]*)\b/i","<b>$1</b>",$str);
Example:
$str = "Its fun to be funny and unfunny";
$keyword = 'fun';
$str = preg_replace("/\b([a-z]*${keyword}[a-z]*)\b/i","<b>$1</b>",$str);
echo "$str"; // prints 'Its <b>fun</b> to be <b>funny</b> and <b>unfunny</b>'
<?php
$str = "my bird is funny";
$keyword = "fun";
$look = explode(' ',$str);
foreach($look as $find){
if(strpos($find, $keyword) !== false) {
if(!isset($highlight)){
$highlight[] = $find;
} else {
if(!in_array($find,$highlight)){
$highlight[] = $find;
}
}
}
}
if(isset($highlight)){
foreach($highlight as $replace){
$str = str_replace($replace,'<b>'.$replace.'</b>',$str);
}
}
echo $str;
?>
Here by am added multi search in a string for your reference
$keyword = ".in#.com#dot.com#1#2#3#4#5#6#7#8#9#one#two#three#four#five#Six#seven#eight#nine#ten#dot.in#dot in#";
$keyword = implode('|',explode('#',preg_quote($keyword)));
$str = "PHP is dot .com the amazon.in 123455454546 dot in scripting language of choice.";
$str = preg_replace("/($keyword)/i","<b>$0</b>",$str);
echo $str;
Basically, since this is HTML, what you have to do is iterate over text nodes and split those containing the search string into up to three nodes (before match, after match and the highlighted match). If "after match" node exist, it must be processed too. Here is a PHP7 example using PHP DOM extension. The following function accepts preg_quoted UTF-8 search string (or regex-conpatible expression like apple|orange). It will enclose every match in a given tag with a given class.
function highlightTextInHTML($regex_compatible_text, $html, $replacement_tag = 'span', $replacement_class = 'highlight') {
$d = new DOMDocument('1.0','utf-8');
$d->loadHTML('<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/></head>' . $html);
$xpath = new DOMXPath($d);
$process_node = function(&$node) use($regex_compatible_text, $replacement_tag, $replacement_class, &$d, &$process_node) {
$i = preg_match("~(?<before>.*?)(?<search>($regex_compatible_text)+)(?<after>.*)~ui", $node->textContent, $m);
if($i) {
$x = $d->createElement($replacement_tag);
$x->setAttribute('class', $replacement_class);
$x->textContent = $m['search'];
$parent_node = $node->parentNode;
$before = null;
$after = null;
if(!empty($m['after'])) {
$after = $d->createTextNode($m['after']);
$parent_node->replaceChild($after, $node);
$parent_node->insertBefore($x, $after);
} else {
$parent_node->replaceChild($x, $node);
}
if(!empty($m['before'])) {
$before = $d->createTextNode($m['before']);
$parent_node->insertBefore($before, $x);
}
if($after) {
$process_node($after);
}
}
};
$node_list = $xpath->query('//text()');
foreach ($node_list as $node) {
$process_node($node);
}
return preg_replace('~(^.*<body>)|(</body>.*$)~mis', '', $d->saveHTML());
}
Search and highlight the word in your string, text, body and paragraph:
<?php $body_text='This is simple code for highligh the word in a given body or text'; //this is the body of your page
$searh_letter = 'this'; //this is the string you want to search for
$result_body = do_Highlight($body_text,$searh_letter); // this is the result with highlight of your search word
echo $result_body; //for displaying the result
function do_Highlight($body_text,$searh_letter){ //function for highlight the word in body of your page or paragraph or string
$length= strlen($body_text); //this is length of your body
$pos = strpos($body_text, $searh_letter); // this will find the first occurance of your search text and give the position so that you can split text and highlight it
$lword = strlen($searh_letter); // this is the length of your search string so that you can add it to $pos and start with rest of your string
$split_search = $pos+$lword;
$string0 = substr($body_text, 0, $pos);
$string1 = substr($body_text,$pos,$lword);
$string2 = substr($body_text,$split_search,$length);
$body = $string0."<font style='color:#FF0000; background-color:white;'>".$string1." </font> ".$string2;
return $body;
} ?>
加载中,请稍侯......
精彩评论