note 56678 deleted from language.types.string by colder

Note Submitter: php at simoneast dot NOSPAM dot net ---- Be ULTRA careful when multiplying numbers like '1,000'. If it's a string with a thousands separator like that, PHP ignores everything after the comma. <? echo "2,500" * 2; // displays 4 echo "20,50" * 2; // displays 4 echo "2,500.00" * 2; // displays 4 is_numeric("2,500"); // false ?> I was developing a shopping cart, and had items worth over $1,000 advertised as $1! Luckily we realised before launch.