I want to remove all non Arabic, non English and non Numbers charecters from a string, except for dashes (-).
I managed to do it for non English alphanumeric characters like this:
$slug = ereg_replace('[^A-Za-z0-9-]', '', $string);
But for non arabic alphanumeric characters i tried to do it like this:
$slug = ereg_replace('\p{InArabic}', '', $string);
but it didnt strip the non alphanumeric characters! I also tried this answer but it didnt work either, it always returns '0' !!
$slug = preg_replace('/[^\x{0600}-\x{06FF}A-Za-z0-9-]/u','', $string);
Hopefully someone can help me.
Try the below:
$slug = preg_replace('/[^\p{Arabic}\da-z-]/ui', '', $string);
Related
I'm trying to remove cached profiles which have non English letters in their description. I'm fine with dashes, symbols, special characters, underscores all that I just don't want foreign characters in my string.
The issue is, my code below detects strings with á as ASCII even though it isn't an English character, is matching against ASCII the right way?
if (!mb_detect_encoding($this->removeEmojis(str_replace(" ", "", $cacheItem->description), 'ASCII', true)))
{
$cacheItem->delete(); // laravel
}
Value of $cacheItem->description
Welcome to my profile<br> Londrina-Paraná
The letter á is a non English character.
The description can also contain dots, symbols, special characters, but I want to detect foreign characters like Latin.
Descriptions can also contain emojis so I try to remove them with this function
private function removeEmojis($text){
// theres lots more inside the preg_replace I truncated it for readability
return preg_replace('/[\x{1F3F4}](?:\x{E0067}\x{E0062}\x{E0077}\x{E006C}\x{E0073}\x{E007F})|[\x{1F3F4}]/u', ' ', $text);
}
You can detect any character that is not printable ASCII , by using this regexp
[^\x20-\x7E]]*
See ASCII table
Replace the matches with empty string then you get a purified one and then you can apply your emoji replacement.
You can use preg_match to check if all the characters in the string are in the range <space> to ~ which is the ASCII character range:
$description = 'Welcome to my profile<br> Londrina-Paraná';
var_dump(preg_match('/^[ -~]*$/', $description));
$description = 'Welcome to my profile<br> Londriná-Parana';
var_dump(preg_match('/^[ -~]*$/', $description));
$description = 'Welcome to my profile<br> Londrina-Parana';
var_dump(preg_match('/^[ -~]*$/', $description));
Output:
int(0)
int(0)
int(1)
Demo on 3v4l.org
What I am trying to achieve is - I want to use a preg-replace to highlight searched string in suggestions but ignoring diacritics on characters, spaces or apostrophe. So when I will for example search for ha my search suggestions will look like this:
O'Hara
Ó an Cháintighe
H'aSOMETHING
I have done a loads of research but did not come up with any code yet. I just have an idea that I could somehow convert the characters with diacritics (e.g.: Á, É...) to character and modifier (A+´, E+´) but I am not sure how to do it.
I finally found working solution thanks to this Tibor's answer here: Regex to ignore accents? PHP
My function highlights text ignoring diacritics, spaces, apostrophes and dashes:
function highlight($pattern, $string)
{
$array = str_split($pattern);
//add or remove characters to be ignored
$pattern=implode('[\s\'\-]*', $array);
//list of letters with diacritics
$replacements = Array("a" => "[áa]", "e"=>"[ée]", "i"=>"[íi]", "o"=>"[óo]", "u"=>"[úu]", "A" => "[ÁA]", "E"=>"[ÉE]", "I"=>"[ÍI]", "O"=>"[ÓO]", "U"=>"[ÚU]");
$pattern=str_replace(array_keys($replacements), $replacements, $pattern);
//instead of <u> you can use <b>, <i> or even <div> or <span> with css class
return preg_replace("/(" . $pattern . ")/ui", "<u>\\1</u>", $string);
}
wondering how I can replace all special chars on my string like: hello this is a test!
I've wrote this code:
$text = preg_replace("/[^A-Za-z0-9]/", ' ', $text);
This works need more flexibility to allow special chars like áéíóú... and remove only certain chars like: :!"#$%&/()=?¿¡...
Any ideas?
Use $text = preg_replace("/[^\p{L}\p{N}]/u", ' ', $text);
This will match all characters that are not letters or numbers and will treat Unicode letters appropriately.
I know this question has been asked several times for sure, but I have my problems with regular expressions... So here is the (simple) thing I want to do in PHP:
I want to make a function which replaces unwanted characters of strings. Accepted characters should be:
a-z A-Z 0-9 _ - + ( ) { } # äöü ÄÖÜ space
I want all other characters to change to a "_". Here is some sample code, but I don't know what to fill in for the ?????:
<?php
// sample strings
$string1 = 'abd92 s_öse';
$string2 = 'ab! sd$ls_o';
// Replace unwanted chars in string by _
$string1 = preg_replace(?????, '_', $string1);
$string2 = preg_replace(?????, '_', $string2);
?>
Output should be:
$string1: abd92 s_öse (the same)
$string2: ab_ sd_ls_o
I was able to make it work for a-z, 0-9 but it would be nice to allow those additional characters, especially äöü. Thanks for your input!
To allow only the exact characters you described:
$str = preg_replace("/[^a-zA-Z0-9_+(){}#äöüÄÖÜ -]/", "_", $str);
To allow all whitespace, not just the (space) character:
$str = preg_replace("/[^a-zA-Z0-9_+(){}#äöüÄÖÜ\s-]/", "_", $str);
To allow letters from different alphabets -- not just the specific ones you mentioned, but also things like Russian and Greek, or other types of accent marks:
$str = preg_replace("/[^\w+(){}#\s-]/", "_", $str);
If I were you, I'd go with the last one. Not only is it shorter and easier to read, but it's less restrictive, and there's no particular advantage to blocking stuff like и if äöüÄÖÜ are all fine.
Replace [^a-zA-Z0-9_\-+(){}#äöüÄÖÜ ] with _.
$string1 = preg_replace('/[^a-zA-Z0-9_\-+(){}#äöüÄÖÜ ]/', '_', $string1);
This replaces any characters except the ones after ^ in the [character set]
Edit: escaped the - dash.
I needed to remove all non Arabic characters from a string and eventually with the help of people from stack-overflow was able to come up with the following regex to get rid of all characters which are not Arabic.
preg_replace('/[^\x{0600}-\x{06FF}]/u','',$string);
The problem is the above removes white spaces too. And now I discovered I would need character from A-Z,a-z,0-9, !##$%^&*() also. So how do I need to modify the regex?
Thanking you
Add the ones you want to keep to your character class:
preg_replace('/[^\x{0600}-\x{06FF}A-Za-z !##$%^&*()]/u','', $string);
assume you have this string:
$str = "Arabic Text نص عربي test 123 و,.m,............ ~~~ ٍ،]ٍْ}~ِ]ٍ}";
this will keep arabic chars with spaces only.
echo preg_replace('/[^أ-ي ]/ui', '', $str);
this will keep Arabic and English chars with Numbers Only
echo preg_replace('/[^أ-يA-Za-z0-9 ]/ui', '', $str);
this will answer your question latterly.
echo preg_replace('/[^أ-يA-Za-z !##$%^&*()]/ui', '', $str);
In a more detailed manner from Above example, Considering below is your string:
$string = '<div>This..</div> <a>is<a/> <strong>hello</strong> <i>world</i> ! هذا هو مرحبا العالم! !##$%^&&**(*)<>?:";p[]"/.,\|`~1##$%^&^&*(()908978867564564534423412313`1`` "Arabic Text نص عربي test 123 و,.m,............ ~~~ ٍ،]ٍْ}~ِ]ٍ}"; ';
Code:
echo preg_replace('/[^\x{0600}-\x{06FF}A-Za-z0-9 !##$%^&*().]/u','', strip_tags($string));
Allows: English letters, Arabic letters, 0 to 9 and characters !##$%^&*().
Removes: All html tags, and special characters other than above