PHP compares the int data in MySQL

For example mysql a table column is an int (10) type, I get a piece of such data in PHP, and then I want to know whether this data is a value, I should $data = = = 2, or $data = = = "2"? I was $data when inserting the data = 2;

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For example mysql a table column is an int (10) type, I get a piece of such data in PHP, and then I want to know whether this data is a value, I should $data = = = 2, or $data = = = "2"? I was $data when inserting the data = 2;

There are 2 types of data returned by MySQL (text or binary), compared to that $data === '2' .

$a == $b    等于  TRUE，如果类型转换后 $a 等于 $b。$a === $b   全等  TRUE，如果 $a 等于 $b，并且它们的类型也相同。

Since it is integral type, do not quote, write directly as $data == 2 can.

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