some help please

• • Reply

  13 years ago

  by genius_supreme

  genius_supreme

  , Malaysia

  Joined 18 years ago
  hey guys.. need help..
  1) how do i set a validation for a text field to specificly recieve numeric values only.?? i tried the is_nan but didnt work ..maybe i did not use it correctly...im not sure though...
  
  2)how do i split a text from a alphanumeric value?
  
  thanks in advance guys.
  
  
  
  
  
  
  
  Report abuse
• • Reply

  13 years ago

  by akicks

  Andrew Kicks

  , United Kingdom

  Joined 14 years ago
  1) use is_numeric($value) instead of is_nan($value)
  

  if(is_numeric($value)){
      //is a number
  }
  else{
      //is not a number
  }
  
  /*valid numbers 
  "200" //positive
  "-200" //negative
  "  200" //string (even with a space first)
  "200.01"//decimal
  ".01"//=0.01
  "2e10" //scientific notation
  "0xFF"//hex notation (without sign, decimal, exponential parts)
  */
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  

  
  
  Report abuse