On Thu, Nov 17, 2005 at 02:37:49PM -0500, blackwater dev wrote:
How can I check to see if a string var holds a number? Is regex the
only way to do this? For example I have code where the var could hold
10 or ten. If the string is a number, do one thing, if it isn't
do something else. is_int
Which version of PHP are you using? On php 4.4.0 (SuSE 10.0 default RPM, not
custom build, so perhaps I'm missing some extras you're using?) the following
script works fine:
?php
if (10==intval(ten)) echo boo\n; else echo no boo\n;
?
I get no boo. intval doesn't convert my ten to a
If I misunderstood the intval part of your post, than the [proposed already]
is_numeric solutions are the way to go. is_numeric will, however, unlike the
conversion functions, return false if there's anything but a number in the
string, so, i.e., is_numeric (10a1) will return false, but
Curt,
yes, technically, 0 is a number - it's a bit late here, and I believe I
mis-understood the original question, which is why I re-posted in the thread.
I guess my mind got a bit confused by the combination of is_int doesn't
work, intval returns a number and '10' vs 'ten' example.
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