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Tiffany Brown's Blog:
PHP Quickie: More on is_numeric vs. ctype_digit
Aug 17, 2006 @ 07:32:52

Tiffany Brown has posted an update to her look into is_numeric versus ctype_digit today, mentioning an issue she came across when testing based on the differences she found in her previous posting.

Just a quick follow-up to my post on is_numeric vs. ctype_digit. There is one quirk with ctype_digit that may affect your choice about whether to use it.

When the string in question is empty, ctype_digit returns TRUE. However, when it is null, ctype_digit will return FALSE.

She includes code to illustrate, noting the return of each function.

tagged: is_numeric ctype_digit quirk true false return is_numeric ctype_digit quirk true false return

Link:

Tiffany Brown's Blog:
PHP Quickie: More on is_numeric vs. ctype_digit
Aug 17, 2006 @ 07:32:52

Tiffany Brown has posted an update to her look into is_numeric versus ctype_digit today, mentioning an issue she came across when testing based on the differences she found in her previous posting.

Just a quick follow-up to my post on is_numeric vs. ctype_digit. There is one quirk with ctype_digit that may affect your choice about whether to use it.

When the string in question is empty, ctype_digit returns TRUE. However, when it is null, ctype_digit will return FALSE.

She includes code to illustrate, noting the return of each function.

tagged: is_numeric ctype_digit quirk true false return is_numeric ctype_digit quirk true false return

Link:

Tiffany Brown's Blog:
PHP quickie: is_numeric() versus ctype_digit()
Jul 28, 2006 @ 06:18:39

In this new post Tiffany Brown shares a "PHP quickie" with her readers - using is_numeric versus ctype_digit.

The difference is subtle, but important one. Which function you use depends on the condition for which you’re testing.

is_numeric tests whether the string in question is a number. ctype_digit(), on the other hand, tests whether the string in question contains all numeric characters.

To help alleviate the confusion, she gives some code that does var_dumps of both methods, clearly showing the difference.

tagged: is_numeric ctype_digit usage quickie tutorial is_numeric ctype_digit usage quickie tutorial

Link:

Tiffany Brown's Blog:
PHP quickie: is_numeric() versus ctype_digit()
Jul 28, 2006 @ 06:18:39

In this new post Tiffany Brown shares a "PHP quickie" with her readers - using is_numeric versus ctype_digit.

The difference is subtle, but important one. Which function you use depends on the condition for which you’re testing.

is_numeric tests whether the string in question is a number. ctype_digit(), on the other hand, tests whether the string in question contains all numeric characters.

To help alleviate the confusion, she gives some code that does var_dumps of both methods, clearly showing the difference.

tagged: is_numeric ctype_digit usage quickie tutorial is_numeric ctype_digit usage quickie tutorial

Link: