How to Convert string to utf-8 codepoint in php

Question

I want to convert a string like:

alnassre 
will be 0061006c006e00610073007300720065
عربي
will be 063906310628064a
a
will be 0061

using PHP

as what is going in the link http://www.bareedsms.com/tools/UniCodeConverter.aspx

Related http://stackoverflow.com/questions/7106470/utf-8-to-unicode-code-points — Timo Huovinen, Apr 22 '14 at 13:32

score 3 · Answer 1 · answered Dec 13 '13 at 20:33

3

I know you already found an answer that works for you, but this should be:

Much faster
Much easier to adapt to other character encodings.

It does depend on iconv, but all modern PHP installs have that, right?

 function utf8_to_unicode_codepoints($text) {
     return ''.implode(unpack('H*', iconv("UTF-8", "UCS-4BE", $text)));
 }

answered Dec 13 '13 at 20:33

Daniel Martin

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1

Note that this doesn't quite do what you asked! But that's because what you asked has issues (specifically, it won't work for all unicode characters since there are codepoints beyond 0xFFFF). To get close to what you asked for, use `UTF-16BE` or `UCS-2BE`. – Daniel Martin Dec 13 '13 at 20:41

score 1 · Accepted Answer · edited May 23 '17 at 12:25

I found the answer but it return array here

I Edit the function to return String.

function utf8_to_unicode($str) {

    $unicode = array();        
    $values = array();
    $lookingFor = 1;

    for ($i = 0; $i < strlen($str); $i++) {

        $thisValue = ord($str[$i]);

        if ($thisValue < 128) 
            $unicode[] = str_pad(dechex($thisValue), 4, "0", STR_PAD_LEFT);
        else {
            if (count($values) == 0) $lookingFor = ($thisValue < 224) ? 2 : 3;                
            $values[] = $thisValue;                
            if (count($values) == $lookingFor) {
                $number = ($lookingFor == 3) ?
                (($values[0] % 16) * 4096) + (($values[1] % 64) * 64) + ($values[2] % 64):
                (($values[0] % 32) * 64) + ($values[1] % 64);
                $number = strtoupper(dechex($number));
                $unicode[] = str_pad($number, 4, "0", STR_PAD_LEFT);
                $values = array();
                $lookingFor = 1;
            } // if
        } // if
    } // for
    $str="";
    foreach ($unicode as $key => $value) {
        $str .= $value;
    }


    return ($str);   
} // utf8_to_unicode

How to Convert string to utf-8 codepoint in php

2 Answers2