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"Calculating age with PHP"

Hiya, ive got a prob which im sure is simple to sort, i'm trying to calculate a persons age from a given date of birth, but the code returns an incorrect age if the day and month is in the future.

// dob 6/3/1970

$day=6;
$month=3;
$year=1970;

// calculate age

$age=date("Y") - $year;

// correct age if month & day is in future

if(date("n") < $month & date("j") < $day)
{
$age=$age-1;
}

echo $age;

This code is displaying the result as
39

it should be
38

it must be a simple error but im new to this and cant see it for looking. Any ideas?
many thx in advance.

Thx 4 the help Pi

Works a treat and much appreciated.

Keep safe m8.

You need to check for two cases:

1) the month is earlier

OR

2) the month is the same and the day is earlier

i.e.


if(date("n") < $month || (date("n") == $month && date("j") < $day)) {
$age = $age - 1;
}


At present, a later or equal day in an earlier month won't trigger the condition.

Also, be careful with AND and OR operators, as there are two of each.

A single ampersand, &, is used for bitwise AND, but two ampersands, &&, are used for logical AND. Ditto, for bitwise OR, |, and logical OR, ||.

Logical AND and OR are used when stringing conditions together.
Bitwise AND and OR are used to turn individual bits in a variable on and off.

Hiya, ive got a prob which im sure is simple to sort, i'm trying to calculate a persons age from a given date of birth, but the code returns an incorrect age if the day and month is in the future.

// dob 6/3/1970

$day=6;
$month=3;
$year=1970;

// calculate age

$age=date("Y") - $year;

// correct age if month & day is in future

if(date("n") < $month & date("j") < $day)
{
$age=$age-1;
}

echo $age;

This code is displaying the result as
39

it should be
38

it must be a simple error but im new to this and cant see it for looking. Any ideas?
many thx in advance.