PHP: Split a string in to an array foreach char

Question

I am making a method so your password needs at least one captial and one symbol or number. I was thinking of splitting the string in to lose chars and then use preggmatch to count if it contains one capital and symbol/number.

however i did something like this in action script but can't figure out how this is called in php. i cant find a way to put every char of a word in a array.

AS3 example

    for(var i:uint = 0; i < thisWordCode.length -1 ; i++)
{
    thisWordCodeVerdeeld[i] = thisWordCode.charAt(i);
    //trace (thisWordCodeVerdeeld[i]);
}

Thanks, Matthy

http://php.net/manual/en/function.str-split.php – hakre Sep 26 '12 at 14:37 — hakre, Sep 26 '12 at 14:37

score 95 · Answer 1 · answered Feb 14 '13 at 19:34

95

you can convert a string to array with str_split and use foreach

$chars = str_split($str);
foreach($chars as $char){
    // your code
}

answered Feb 14 '13 at 19:34

Kiyan

2,155
15
15

2

IMHO this is the nicest way. It might not be the fastest, but for most applications it doesn't matter, at all. In our app, the speed difference was not even possible to measure. (Vs for-loop.) – Prof. Falken Mar 14 '13 at 16:00
1

Also agree that this is the better answer, since it's the more directly answering the question – Brian Leishman Mar 25 '15 at 14:38
1

Note that if `$str` is an empty string `str_split` will return `[""]` – Josh Johnson Aug 13 '17 at 19:37
1

This is still the nicest answer. Only that it is now best to use `mb_str_split` to handle multibyte strings correctly. – SeparateReality Sep 11 '20 at 09:37

Tom Haigh · Accepted Answer · 2009-08-18T14:45:24.140

81

You can access characters in strings in the same way as you would access an array index, e.g.

$length = strlen($string);
$thisWordCodeVerdeeld = array();
for ($i=0; $i<$length; $i++) {
    $thisWordCodeVerdeeld[$i] = $string[$i];
}

You could also do:

$thisWordCodeVerdeeld = str_split($string);

However you might find it is easier to validate the string as a whole string, e.g. using regular expressions.

edited Aug 18 '09 at 14:45

answered Aug 18 '09 at 13:49

Tom Haigh

57,217
21
114
142

Documentation for square bracket notation: http://php.net/manual/en/language.types.string.php#language.types.string.substr – Pang Oct 23 '15 at 10:58
1

use isset instead of strlen: `for ($i=0; isset($string[$i]); $i++) {` – Melo Waste Jun 05 '17 at 15:59
$thisWordCodeVerdeeld = str_split($string); This is perfect answer for separating string characters and getting each of them in an array. – Umar Niazi May 16 '19 at 20:09

score 16 · Answer 3 · answered May 27 '15 at 18:17

16

Since str_split() function is not multibyte safe, an easy solution to split UTF-8 encoded string is to use preg_split() with u (PCRE_UTF8) modifier.

preg_split( '//u', $str, null, PREG_SPLIT_NO_EMPTY )

answered May 27 '15 at 18:17

Danijel

12,408
5
38
54

score 15 · Answer 4 · edited Oct 09 '12 at 19:05

15

You can access a string using [], as you do for arrays:

$stringLength = strlen($str);
for ($i = 0; $i < $stringLength; $i++)
    $char = $str[$i];

edited Oct 09 '12 at 19:05

nneonneo

171,345
36
312
383

answered Aug 18 '09 at 13:48

Greg

316,276
54
369
333

3

this doesn't work correctly for multibyte string like: 'éléphant'. http://stackoverflow.com/questions/3666306/how-to-iterate-utf-8-string-in-php – David Silva Smith Jan 08 '17 at 14:20

score 1 · Answer 5 · answered Feb 19 '22 at 04:53

1

Try this, It works beter for UTF8 characters (Kurdish, Persian and Arabic):

<?php
$searchTerm = "هێڵەگ";
$chars = preg_split("//u", $searchTerm, -1, PREG_SPLIT_DELIM_CAPTURE);
foreach($chars as $char){echo $char."<br>";}
?>

answered Feb 19 '22 at 04:53

chro

11
3

`PREG_SPLIT_DELIM_CAPTURE`? You aren't using any capture groups! – mickmackusa Jan 16 '23 at 01:25

PHP: Split a string in to an array foreach char

5 Answers5

Linked

Related