Question

How to remove the letters (all non-numeric characters) from a string in PHP

Answer 1

$s = '123php 998programming 89736129language';

$s =  preg_replace('/[^0-9]+/', '', $s);

echo $s;

 
/*
run:
  
12399889736129
   
*/

 

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Answer 2

$s = '-3.14php 998programming 89736129language';

$s =  preg_replace("/[^0-9,.-]/", "", $s);

echo $s;

 
/*
run:
  
-3.1499889736129
   
*/

 

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