Convert string to an array containing number and alphabet using regex in php?

Question

I have a string that contains either an alphabet or a number.

AB1D21E48EFGHI1K

I am trying to break that string into array as follows.

[0] => A
[1] => B
[2] => 1
[3] => D
[4] => 21
[5] => E
[6] => 48
[7] => E
[8] => F
[9] => G
[10] => H
[11] => I
[12] => 1
[13] => K

But, I am getting array as follow:

[0] => Array (
    [0] => AB
    [1] => 1
    [2] => D
    [3] => 21
    [4] => E
    [5] => 48
    [6] => EFGHI
    [7] => 1
    [8] => K
)

I have tried the following code so far.

$string = 'AB1D21E48EFGHI1K';
preg_match_all('/([0-9]+|[a-zA-Z]+)/', $string, $matches);
print_r($matches);

your desired output?

Bhaskar Jain
– Bhaskar Jain

2017-04-16 10:43:59 +00:00
Commented Apr 16, 2017 at 10:43 — Bhaskar Jain
– Bhaskar Jain, Commented Apr 16, 2017 at 10:43
Use ([0-9]+|[a-zA-Z]{1}) or simpler (\d+|\w{1})

Mohammad
– Mohammad

2017-04-16 10:45:26 +00:00
Commented Apr 16, 2017 at 10:45 — Mohammad
– Mohammad, Commented Apr 16, 2017 at 10:45
@Mohammad, Thank you. It helped

sanin
– sanin

2017-04-16 10:48:47 +00:00
Commented Apr 16, 2017 at 10:48 — sanin
– sanin, Commented Apr 16, 2017 at 10:48

Mohammad · Accepted Answer · 2017-04-16 10:57:24Z

1

You should remove + after word character to matching with length 1. So your regex should be

/([0-9]+|[a-zA-Z])/

You can make your regex simpler to

/\d+|\w/

The code changed to

$string = 'AB1D21E48EFGHI1K';
preg_match_all('/\d+|\w/', $string, $matches);
print_r($matches);

Check result in demo

edited Apr 16, 2017 at 10:57

answered Apr 16, 2017 at 10:48

Mohammad

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3 Comments

splash58 Over a year ago

[0-9]+|[a-zA-Z]

Toto Over a year ago

\w is NOT the same as [a-zA-Z]

Mohammad Over a year ago

@Toto You are right but in this case it worked properly.

Ujjval Jha · Accepted Answer · 2017-04-16 11:02:20Z

1

Please try like this way, it might be useful for you

<?php
$data = array(0 => AB,1 => 1, 2 => D, 3 => 21, 4 => E, 5 => 48, 6 => EFGHI, 7 => 1, 8 => K);

/*print "<pre>";
print_r($data);
print "<pre>";*/


$new_data = array();
foreach($data as $key => $value){

  if (!preg_match('/[^A-Za-z]/', $value)) // '/[^a-z\d]/i' should also work.
  {
    // string contains only english letters
    $arr1 = str_split($value);
    foreach($arr1 as $row => $val){
      $new_data[] = $val;
    }
  }else{
    $new_data[] = $value;
  }

}

/*
 print "<pre>";
 print_r($new_data);
 print "<pre>";*/

?>

answered Apr 16, 2017 at 11:02

Ujjval Jha

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2 Comments

Toto Over a year ago

Where $data comes from?

Ujjval Jha Over a year ago

According to above question, I have created a $data array in which data store in user questions format according .

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