PHP Question
How to return the numbers back to the string as reversed in php
I'm working on the practice and I got an example of how the program works
Entry: "Dlasdf234dkl sdfkl8886adaf15adfjk7 asdflkj376661a s445s198"
Output: "Dlasdf432dkl sdfkl6888adaf51adfjk7 asdflkj166673a s544s891"
I managed to get all the numbers regardless of where they are, and i did that by explode and inplode i have nubers as string and becose i did it in loop i am stuck and cant get numbers back in original string
when i try to put them back in string i get this mess
Array
(
[0] => Array
(
[a] => Dlasdf432dkl sdfkl432adaf432adfjk432 asdflkj432a s432s432
[sub] => Пошаљи
)
[1] => Array
(
[a] => Dlasdf6888dkl sdfkl6888adaf6888adfjk6888 asdflkj6888a s6888s6888
[sub] => Пошаљи
)
[2] => Array
(
[a] => Dlasdf51dkl sdfkl51adaf51adfjk51 asdflkj51a s51s51
[sub] => Пошаљи
)
[3] => Array
(
[a] => Dlasdf7dkl sdfkl7adaf7adfjk7 asdflkj7a s7s7
[sub] => Пошаљи
)
[4] => Array
(
[a] => Dlasdf166673dkl sdfkl166673adaf166673adfjk166673 asdflkj166673a s166673s166673
[sub] => Пошаљи
)
[5] => Array
(
[a] => Dlasdf544dkl sdfkl544adaf544adfjk544 asdflkj544a s544s544
[sub] => Пошаљи
)
[6] => Array
(
[a] => Dlasdf891dkl sdfkl891adaf891adfjk891 asdflkj891a s891s891
[sub] => Пошаљи
)
)
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Answer Source
You'll want to use regex to parse out the numbers and replace them:
<?php
$str = 'Dlasdf234dkl sdfkl8886adaf15adfjk7 asdflkj376661a s445s198';
echo preg_replace_callback('~([0-9]{2,})~', function($matches) { return strrev($matches[1]); }, $str);
// Dlasdf432dkl sdfkl6888adaf51adfjk7 asdflkj166673a s544s891
?>
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