I need answer for this type of question. Please I need to get type of variable from HTML input field and to echo that type of $var.
From this form I need to check what type of data is entered. Is it string or integer, etc.
<form>
<input type="text" name="podatak" value="podatak" />
<input type="Submit" name="Submit">
</form>
Thanks in advance.
All form submimssions are strings to begin with as such. You can however use functions like is_numeric to see if the item is a number and is_array to see if the form element being passed is an array (ie, checkboxes, possibly files and the like).
Based on your comments, I would do something like the following:
function whatTypeAmI($var)
{
if(is_array($var)
{
// Request is likely a checkbox or multiple files.
echo "I am an Array! Yeeehaaa!";
}
else if(is_numeric($var))
{
// I look like a number, or someone
// typed in a number into a text field.
echo "I am a Fluffeh number!";
}
else
{
echo "Goodness, who knows what on earth happened?";
}
}
foreach($_POST as $val)
{
whatTypeAmI($val);
}
It's always a string or an array. If is_array($_POST['value']) returns true; it's an array. In any other case it's a string.
i guess you are trying to find form field type not the data type... like text, submit, button etc... if that is your scenario then i am afraid there is not such function. As far as i know form post will not send any form type information to the server... any way you can do it using associative array. ex: on your php side do some thing like.
<?php
function getType($elementName){
$formType = array('elementName1' => 'elementType1', 'elementName2' => 'elementType2'......);
if(array_key_exists($elementName, $formType))
return $formType[$elementName];
return 'Unknown';
}
foreach($_POST AS $elementName => $elementVal){
echo 'name = '.$elementName.' type = '. getType($elementName).' value ='.$elementVal;
}
You can use var_dump($variable).
you can make use of these functions : is_int , is_array , is_null, is_float , is_double , is_bool, etc.
null if the input field does not exist .function gettype_custom($var){
if(is_array($var)){
return 'array';
}elseif(is_numeric($var)){
return 'numeric';
}elseif(is_string($var)){
return 'string';
}else{
return 'unknown';
}
}
$_POST or $_GET data is either an array or a string. gettype is therefore not useful in this case
<input type="text" name="podatak" value="<?php echo $var; ?>" />