checkdate and int-conversion

[Erik T.]

Hi,

I have a form that contains amongst others a text-field where users
should enter their year of birth.

<input type="text" name="year_of_birth">

Within the php script that parses the info, I try to check if a valid
birth-date was given, using the checkdate function. This function
expects integers as parameters, so I tought converting the text to an
integer value would work.

checkdate (1, 1, (int)$_POST["year_of_birth"])

However, this doesn't work, and I cannot seem to find out why... Any clues?

cheers,
E.T.

[Janwillem Borleffs]

Erik T. wrote:

Within the php script that parses the info, I try to check if a valid
birth-date was given, using the checkdate function. This function
expects integers as parameters, so I tought converting the text to an
integer value would work.

checkdate (1, 1, (int)$_POST["year_of_birth"])

No explicit casting required, PHP will take care of this automatically.
However, this doesn't work, and I cannot seem to find out why... Any
clues?

It doesn't work as it always returns 0/1 or throws an error?

More info required, including your OS.
JW

[Erik T.]

Janwillem Borleffs wrote:

Erik T. wrote:

Within the php script that parses the info, I try to check if a valid
birth-date was given, using the checkdate function. This function
expects integers as parameters, so I tought converting the text to an
integer value would work.

checkdate (1, 1, (int)$_POST["year_of_birth"])
No explicit casting required, PHP will take care of this automatically.

Without the casting, I get :

Warning: checkdate() expects parameter 3 to be long, string given in
ledenform.php on line 49

Line 49 looks like this:

if ( checkdate ( $_POST["geboortemaand"] , $_POST["geboortedag"],
$_POST["geboortejaar"] ) )

With the typecast, I don't get an error, but checkdate always results as
FALSE.

However, this doesn't work, and I cannot seem to find out why... Any
clues?

It doesn't work as it always returns 0/1 or throws an error?

More info required, including your OS.

I'm hosting this at my provider. php_info result:
http://www.akindovzw.be/info.php

[Janwillem Borleffs]

Erik T. wrote:

Without the casting, I get :

Warning: checkdate() expects parameter 3 to be long, string given in
ledenform.php on line 49

This means that $_POST["geboortejaar"] does not start with a digit, but
probably with a white space character.
With the typecast, I don't get an error, but checkdate always results
as FALSE.

When your try to cast a string to an integer and the string doesn't start
with a digit, the result will be 0, which is why checkdate() always returns
false.

Try to apply trim() to $_POST["geboortejaar"] before using it and have a
close look at its value when the problem persists.
JW

[R. Rajesh Jeba Anbiah]

Erik T. wrote:
<snip>

checkdate (1, 1, (int)$_POST["year_of_birth"])

However, this doesn't work, and I cannot seem to find out why... Any

clues?

You may want to understand the casting basics in PHP:
1. http://in2.php.net/set_type#50255
2. http://in2.php.net/manual/en/languag...e-juggling.php

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