This is a way to sanitize a string to be used as file name or URL path etc. by removing unwanted characters or replacing them with a hyphen or similar.
It takes a string like:
Daily SimpliVity Backup 12/16/2018 02:00:215
and converts it into:
daily-simplivity-backup-12-16-2018-02-00-25
This is how to extract a sub string within a string by brackets or parentheses.
This is how you can remove empty places in a comma separated list e.g when you have a list like "one, , two, , three, , " and you want it to look like "one, two, three"
<?php
$input = "one, , , two, ";
//$input = ", two, two, ";
//$input = ", two, two";
$input = preg_replace( "/, , |, $|^, /", "", $input);
echo $input;
?>This is some ways of removing the Swedish characters åäö in a string.
This is how you can split a text by its natural paragraphs using line break characters backslash r and backslash n (\r\n). This script looks for three following line breaks and add it to an array for other actions. This code is ripped out of its context in a Drupal module.
/**
* Get the position in a text inbetween two complete words just below
* a limit if the text is longer than the limit.
*
* @param unknown_type $text
* @param unknown_type $limit
* @return unknown
*/
function _get_complete_word($text, $limit = 5000) {
$text_lenght = strlen($text);
if ($text_lenght <= $limit) {
return $text_lenght;
}else{
preg_match_all("/ /ui", $text, $matches, PREG_OFFSET_CAPTURE);
foreach ($matches[0] as $key => $value) {
if ($value[1] >= $limit) {
return ($key == 0 ?
This expression can be used when you want to validate a pattern containing houres and minutes or just hours or just minutes. The time pattern to accept is:
This is how you can split a text into chuncks containing a maximum number of characters and retain full sentences.As an example, if you have a limit of 5000 characters, as in the case of Google Translate API, and would like to divide the text into chunks, but you do not want sentences or words to be divided in the middle.
To fix Support Ticketing System module filename error I have used this hack in support.module. The problem is that if the file name contains other characters than A-Z it end up in some unconverted file name that is not good looking and can in some cases make it hard to open. The file name can look like this: "=?ISO-8859-1?Q?Spr=E5khantering=2Epdf?=" when it should be "Språkhantering.pdf". It seems like urldecode() encounters a problem and returns some sort of ISO string. My solution was to replace all non A-Z characters by "x".
This is how you can filter strings and just allow a-z and A-Z and /or numbers.
<?php
//Allow only a-z, A-Z and 0-9
if(ctype_alnum($value) > 0) {
$tags_array[] = $value;
}
//Allow only a-z and A-Z
if(ctype_alpha($value) > 0) {
$tags_array[] = $value;
}
?>Read more about ctype_alnum() or ctype_alpha()