[SOLVED] $string -> numeric

[Ken2k7]

Okay say I have this string:

 

$string = "hello world";

 

What I want to do is go by every letter in a string and see if there is a number in there. Any ideas how to do this. I can't use charAt in PHP.

[lemmin]

foreach ($string as $char)
{
   if ($char > 47 && $char < 58)
      //it has a number in it!
}

[Ken2k7]

o.O

 

And how does $char know how long the $string is?

[phpSensei]

just use preg_match();

 

or

 

<?php

$string = "Hello World";

if(is_numeric($string)){

// Runs this script if there is a number 

}

else
{

// Runs this script if there isnt

}

?>

[Ken2k7]

But $string isn't numeric, I want to see if there is a number in a string. Like this would return true: $string = "Hello W0rld";

[phpSensei]

WHAT? it will check if there is a number, and if it is, it will return true, else it will return false..

 

explain what you want.

[Ken2k7]

What I meant is is_numeric doesn't work because it checks to see if the $string is numeric, which it isn't. It doesn't check every character in the string.

[Ken2k7]

Nevermind. I figured it out.

[phpSensei]

May I see your code? Please?

[pocobueno1388]

phpSensei - Ken wants to check if their is a number IN the string, not if the entire variable is numeric or not. Thats why is_numeric won't work for the situation.

 

The code probably ended up being something like this:

 

<?php

$str = "dsffdaf";
$str = str_split($str);

foreach ($str as $char){
   if (is_numeric($char)){
      $nums = TRUE;
      break;
   }
}

if (isset($nums)){
   echo "The string contained a number.";
} else {
   echo "The string has NO numbers.";
}

?>

[phpSensei]

oh sorry mate, I understood you wrong.