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  1. <?php
  2.  
  3. function filter_characters($str) {
  4. 	return implode('', array_filter(str_split($str), function($digit) {
  5. 	    return ('.' === $digit || ',' === $digit || is_numeric($digit));
  6.     }));
  7. }
  8.  
  9. var_dump(filter_characters('123456789mnbm0hfdec,hrthytr.'));
Success #stdin #stdout 0s 52488KB
comments (?)
stdin
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Standard input is empty
stdout
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string(12) "1234567890,."
https://ideone.com/8LBEFh
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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