php remove all non numeric code example

Example 1: php remove non numeric

$res = preg_replace("/[^0-9]/", "", "Every 6 Months" );

Example 2: php remove all but numbers

// Original SOA
preg_replace('/[^0-9]/', '', '604-619-5135'); // Removes the dahses in 604-619-5135

preg_replace('/[^0-9]/', '', '7#sq7k*77dql'); // = 7777