PHP Check if it is a valid time format regular _php tutorial

The following summarizes several ways to use PHP to verify that the date entered by the user is the correct date Oh, a friend who needs to refer to the reference.

The Checkdate () function validates a trellis-high-date.

Example

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Var_dump (Checkdate (12,31,2000)); Var_dump (Checkdate (2,29,2003)); Var_dump (Checkdate (2,29,2004)); ?> output: BOOL (TRUE) BOOL (FALSE) BOOL (TRUE)

Regular date

Example 1

/**

The code is as follows	Copy Code
* Check if it is a valid time format * * @param string $time * @return void */ function Is_time ($time) { $pattern = '/[d]{4}-[d]{1,2}-[d]{1,2}s[d]{1,2}:[d]{1,2}:[d]{1,2}/'; Return Preg_match ($pattern, $time); }

Example 2

The regular validation date

The code is as follows	Copy Code
$reg = "/d{4}-d{2}-d{2}/"; Preg_match ($reg, $days, $arr); Print_r ($arr);

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