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phpregexvalidationdigits

Validate that a string starts with specified numbers then a certain number of digits

$output = preg_replace( '/[^0-9]/', '', $string );

How can I change the above line to only accept 11 digit long numbers that must start with either 01, 02, 03, 05, 07 or 08, but NOT 04, 06, 09?

Solution

  • Use following pattern: 

     /^0[123578]{1}[0-9]{9}$/