Re: Help with matching numbers 0-100

Richard Lynch wrote: > On Sat, February 3, 2007 10:55 am, Chilling Lounge Admin wrote: >> I need help with matching a variable. The variable would be e.g. 0-15 >> , 16-30 etc. and when the variable is equal to a certain range, it >> would echo an image. >> >> Does anyone know what function I should use? preg_match? >> >> The code would be something like >> >> if(preg_match("[16-30]",$variable)) >> { >> echo "image"; >> } >> >> but the above code doesn't work. How do I fix it? look at pron for half an hour and all of a sudden your code will rewrite itself. or alternatively learn to write regular expressions - for which me recommend RTFM - I assume they still advise actually reading at school? > > Deja Vu! > > <?php > if (!preg_match('/^[0-9]+$/', $input)){ > die("invalid input\n"); > } > $input = (int) $input; > switch (true){ > case $input < 0: die("invalid input\n"); break; > case $input <= 15: echo "image 1 to 15\n"; break; > case $input <= 30: echo "image 16 to 30\n"; break; > default: die("invalid input\n"); break; > } > ?> > > If this is homework, you'd better go hire a tutor NOW, because it > ain't gonna get any easier than this... especially when your doing it for him ;-) >