Php validating numeric input
You can also use a decimal value: for example, a step of 0.3 will allow values such as 0.3, 0.6, 0.9 etc, but not 1 or 2.
But what if you want Now you don’t get a validation error. Also note that if you only want to accept positive numbers, you’ll want to add min=”0″.
However, notice that we do not have to explicitly bind the error messages to the view in our GET route.
This is because Laravel will always check for errors in the session data, and automatically bind them to the view if they are available. The field under validation must be entirely alphabetic characters.
Each field in the form can have zero, one or more validations.
For example, the input should not be empty, should be less than 25 chars, should be alpha-numeric, etc You can associate a set of validation descriptors for each input field in the form.
So the lesson here is that the “step” attribute is linked to both the up/down buttons and the range of values allowed in the field.
When step=”any”, the up/down buttons will increase/decrease the number by 1.The second argument is the validation descriptor that tells the type of the validation required.The third argument is the error message to be displayed if the validation fails.The “step” attribute is less intuitive: by playing with different values, you would most likely work out that it controls the increase/decrease when clicking the up/down buttons on the field. However, the step attribute also determines which values are valid, so a step of 1 means you can enter 1, 2, 3 etc.If you input the number 1 and click the up arrow, it will increase to 2. and a step of 2 means you can enter 2, 4, 6 etc, and when you click the up/down buttons the number will increase/decrease by 2 each time, but entering 3 or 5 in the box will cause a validation error.Moreover, since you are doing the same or similar validation for most of the forms that you make, just too much of duplicate effort is spent on form validations.