This is the code that I've created;
$abs = preg_grep('/^\~\$/gmi', $files);
var_dump($abs);
$json = json_encode($files);
echo($json);
Could anybody explain why it's not catching the second item in the following variable?
["Renewal Fee Reminder.docx","~$newal Fee Reminder.docx"]
edit:
Fixed, code is as follows (although only checks the first character);
$files = file_list($templateDir, '.docx');
function sortLineStarters($var) {
return !($var[0] == '~');
}
$sortedFiles = array_filter($files, "sortLineStarters");
$json = json_encode($sortedFiles);
echo($json);
Why are you using regular expressions for that?
strpos($line, "~$") !== 0
would do the trick while being much more readable.
As for the regular expression itself:
I don't think the modifier g is supported. See the list of supported modifiers for more information.
You don't need a backslash before "~".
You don't need case insensitive flag, since the two characters you use don't depend on the case.
There are two problems. Firstly, g is an unknown modifier. Here is a list of all the valid php pattern modifiers: http://php.net/manual/en/reference.pcre.pattern.modifiers.php
Secondly, the $ in "~$newal Fee Reminder.docx" needs to be escaped. If not php will look for a variable named $newal and try to insert into the string.
The following code should work:
$files = ["Renewal Fee Reminder.docx","~\$newal Fee Reminder.docx"];
$abs = preg_grep('/^~\$/mi', $files);
Edit
If you want to match strings that do not start with ~$ then use the regex /^[^~][^\$]/mi