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Why I got value 0 when using intval() to this statement (PHP)


Why I got value 0 when using intval() to this statement (PHP)

By : Pooja Chaudhary
Date : November 18 2020, 03:49 PM
hop of those help? String conversion to numbers:
If the string starts with valid numeric data, this will be the value used. Otherwise, the value will be 0 (zero).
code :


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When should one use intval and when int

When should one use intval and when int


By : Arun Kumar
Date : March 29 2020, 07:55 AM
will be helpful for those in need intval is slower than casting to int (it's a function) intval can accept a base if its first parameter is a string
Since the second item is really obscure, objectively we should say that intval is simply "worse".
Is (int)$var same as intval($var)?

Is (int)$var same as intval($var)?


By : user3249236
Date : March 29 2020, 07:55 AM
will be helpful for those in need (int) would seem to be a bit faster than intval, as you don't have the overhead of a function call. intval also allows you to set an optional base to convert to, which might be useful:
code :
int intval ( mixed $var [, int $base = 10 ] )
getting intval() using php?

getting intval() using php?


By : user3530838
Date : March 29 2020, 07:55 AM
wish of those help You'll need to get all the integers out of the string, then find the biggest...
code :
$str = "danger13 afno 1 900004";
preg_match_all('/\d+/', $str, $matches); // get all the number-only patterns
$numbers = $matches[0];

$numbers = array_map('intval', $numbers); // convert them to integers from string

$max = max($numbers); // get the largest
In PHP, can I differentiate the result of intval(null) from intval("0")?

In PHP, can I differentiate the result of intval(null) from intval("0")?


By : venkat rathod
Date : March 29 2020, 07:55 AM
I hope this helps . You can use the filter_var() function to determine the difference:
code :
filter_var(null, FILTER_VALIDATE_INT);
// false

filter_var('0', FILTER_VALIDATE_INT);
// int(0)
if (is_int($nr = filter_input(INPUT_POST, 'nr', FILTER_VALIDATE_INT))) {
    // $nr contains an integer
}
if (!is_null($var)) {
    // $var is definitely not null
    // but it might also be an object, string, integer, float even, etc.
}
I try `intval(6.02 * 100)`, the result is 602, but why the result of `intval(5.02 * 100)` is 501?

I try `intval(6.02 * 100)`, the result is 602, but why the result of `intval(5.02 * 100)` is 501?


By : Izzat Bamieh
Date : March 29 2020, 07:55 AM
will help you This is a floating point math issue. The following might help explain it:
code :
ini_set('precision', 17);
echo (float)5.02;
echo 5.02 * 100;
echo intval(501.99999999999994);
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