Javascript function in PHP fromCharCode()

Question

var test = String.fromCharCode(112, 108, 97, 105, 110);
document.write(test);

// Output: plain

Is there any PHP Code to work as String.fromCharCode() of javascript?

http://blog.stanislavstankov.com/2010/02/equal-function-string-fromcharcode-in-php/ — Leniel Maccaferri, Oct 20 '12 at 16:06
You [first asked `String.charCodeAt`](http://stackoverflow.com/questions/12989697/using-php-to-find-unicode-of-a-character) and now you're asking for the reverse? — Alvin Wong, Oct 20 '12 at 16:06
[**This**](http://stackoverflow.com/questions/6058394/unicode-character-in-php-string) is what you want, because `String.fromCharCode` is basically UTF-16 — Alvin Wong, Oct 20 '12 at 16:10
This works better then the posted answers `IntlChar::chr(31337)` — Lime, Jul 15 '17 at 20:30

score 8 · Accepted Answer · answered Oct 20 '12 at 16:04

8

Try the chr() function:

Returns a one-character string containing the character specified by ascii.

http://php.net/manual/en/function.chr.php

answered Oct 20 '12 at 16:04

techfoobar

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I don't think you are handling UTF-16, where `23416 -> "學"` – Alvin Wong Oct 20 '12 at 16:13

Baba · Answer 2 · 2012-10-20T16:11:52.093

6

PHP has chr function which would return one-character string containing the character specified by ascii

To fit your java script style you can create your own class

$string = String::fromCharCode(112, 108, 97, 105, 110);
print($string);

Class Used

class String {
    public static function fromCharCode() {
        return array_reduce(func_get_args(),function($a,$b){$a.=chr($b);return $a;});
    }
}

edited Oct 20 '12 at 16:11

answered Oct 20 '12 at 16:05

Baba

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I don't think you are handling UTF-16, where `23416 -> "學"` – Alvin Wong Oct 20 '12 at 16:13
`String.fromCharCode(23476)` is `宴` – Baba Oct 20 '12 at 16:16

xdazz · Answer 3 · 2012-10-20T16:10:34.810

2

The live demo.

$output = implode(array_map('chr', array(112, 108, 97, 105, 110)));

And you could make a function:

function str_fromcharcode() {
    return implode(array_map('chr', func_get_args()));
}

// usage
$output = str_fromcharcode(112, 108, 97, 105, 110);

edited Oct 20 '12 at 16:10

answered Oct 20 '12 at 16:05

xdazz

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I don't think you are handling UTF-16, where `23416 -> "學"` – Alvin Wong Oct 20 '12 at 16:12
`String.fromCharCode(23476)` is `"宴"` – xdazz Oct 20 '12 at 16:14

score 2 · Answer 4 · answered Oct 20 '12 at 16:07

Try something like this..

 // usage: echo fromCharCode(72, 69, 76, 76, 79)
    function fromCharCode(){
      $output = '';
      $chars = func_get_args();
      foreach($chars as $char){
        $output .= chr((int) $char);
      }
      return $output;
    }

score 1 · Answer 5 · answered Oct 20 '12 at 16:04

The chr() function does this, however it only takes one character at a time. Since I'm not aware of how to allow a variable number of arguments in PHP, I can only suggest this:

function chrs($codes) {
    $ret = "";
    foreach($codes as $c) $ret .= chr($c);
    return $ret;
}
// to call:
chrs(Array(112,108,97,105,110));

score 1 · Answer 6 · answered Jul 08 '20 at 09:53

Use chr() if you only need ASCII support.

echo chr(120); // outputs "x"

Or its multi-byte twin mb_chr() if you need Unicode (requires mbstring extension):

echo mb_chr(23416); // outputs "學"

See:

Javascript function in PHP fromCharCode()

6 Answers6

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