Taken from this link: http://www.regular-expressions.info/unicode.html Check the Unicode Character Properties section. \p{L} matches a single code point in the category “letter”. If your input string is à encoded as U+0061 U+0300, it matches a without the accent. If the input is à encoded as U+00E0, it matches à with the accent. The reason is that … Read more
Assuming the quotes are correctly balanced and there are no escaped quotes, then it’s easy: result = subject.gsub(/a(?=(?:[^”]*”[^”]*”)*[^”]*\Z)/, ”) This replaces all the as with the empty string if and only if there is an even number of quotes ahead of the matched a. Explanation: a # Match a (?= # only if it’s followed … Read more
function _date_is_valid($str) { if (substr_count($str, “https://stackoverflow.com/”) == 2) { list($d, $m, $y) = explode(“https://stackoverflow.com/”, $str); return checkdate($m, $d, sprintf(‘%04u’, $y)); } return false; }
You want to use HTML tidy to do this. The Lib curl page has some source code to get you going. Documents traversing the dom tree. You don’t need an xml parser. Doesn’t fail on badly formated html. http://curl.haxx.se/libcurl/c/htmltidy.html
Maxwell Troy Milton King is right, but since his answer is a bit short, I’ll post this as well and provide some examples to illustrate. First, the . meta character by default does NOT match line breaks. This is true for many regex implementations, including PHP’s flavour. That said, take the text: $text = “Line … Read more
Nothing really special. PHP regex syntax is very much the same as in JavaScript: str = str.replace(/\(\d*\)|\/\(P\)\//g, “”); You can find more information about regular expressions in JavaScript in this manual from MDN: https://developer.mozilla.org/en-US/docs/JavaScript/Guide/Regular_Expressions.
Here is another possible solution. You can pass the string.replace function a function to determine what the replacement value should be. The function will be passed three arguments. The first argument is the matching text, the second argument is the position within the original string, and the third argument is the original string. The following … Read more
you need to escape ‘{‘ & ‘}’ with a ‘\’ so: “{(.*?)}” becomes: “\\{(.*?)\\}” where you have to escape the ‘\’ with another ‘\’ first see: http://www.regular-expressions.info/reference.html for a comprehensive list of characters that need escaping…
match only matches from the beginning of the string. Your code works fine if you do pct_re.search(line) instead.