rlandas · January 6, 2016 03:36
diff --git a/core.php b/core.php
 // only contains integers
 if(ctype_digit((string) $string)){
  // only contains integers
 }
diff --git a/regex.php b/regex.php
 // check if string only contains integers
 if(preg_match('/^[0-9]+$/', (string) $string)){
    // only contains integers
 }
	// check if string only contains integers
	if(preg_match('/^[0-9]+$/', (string) $string)){
	// only contains integers
	}