PHP: How can I determine if a variable has a value that is between two distinct constant values?

Question

How can I determine using PHP code that, for example, I have a variable that has a value

• between 1 and 10, or
• between 20 and 40?

Mada

No, I don't get the idea! You mean "pick a random number between 1 and 10"? Or "calculate the value half-way between 1 and 10"? Or something else? – Ovaritis

Your question is not clear. Do want to get a random value between 1 to 10 or 20 to 40 or do you want to test whether some value is in these ranges? Or even something else? – Bullis

I know, PHP could really do with the SQL equivalent of the BETWEEN statement. It's not hard to do a if(x>=1 && x<=10), but somehow a between might be neater. – Henbit

Answer 1

if (($value > 1 && $value < 10) || ($value > 20 && $value < 40))

Otten

Leaves out the fact that the number could be 1 or 10, 20 or 40. – Altheta

@Altheta got to love the ambiguity of English and off by one errors – Otten

there is no helper function to check a number between 2 numbers in PHP? – Shrine

Answer 2

Do you mean like:

$val1 = rand( 1, 10 ); // gives one integer between 1 and 10
$val2 = rand( 20, 40 ) ; // gives one integer between 20 and 40

or perhaps:

$range = range( 1, 10 ); // gives array( 1, 2, ..., 10 );
$range2 = range( 20, 40 ); // gives array( 20, 21, ..., 40 );

or maybe:

$truth1 = $val >= 1 && $val <= 10; // true if 1 <= x <= 10
$truth2 = $val >= 20 && $val <= 40; // true if 20 <= x <= 40

suppose you wanted:

$in_range = ( $val > 1 && $val < 10 ) || ( $val > 20 && $val < 40 ); // true if 1 < x < 10 OR 20 < x < 40

Underpass

Answer 3

You can do this:

if(in_array($value, range(1, 10)) || in_array($value, range(20, 40))) {
   # enter code here
}

Penneypenni

This looks very clean but be aware that i.e. testing for a price being between one and million means creating an array with million items. I've just measured both ways with microtime() and this one seems to run around 2000x slower for such large range while also consuming a lot of memory. – Doone

the solution looks wonderful, works Awful – Matti

Answer 4

if (($value >= 1 && $value <= 10) || ($value >= 20 && $value <= 40)) {
   // A value between 1 to 10, or 20 to 40.
}

Nationwide

Answer 5

Sorry for the late answer, but this function allow you to do that.

  function int_between($value, $start, $end) {
    return in_array($value, range($start, $end));
  }

  // Example
  $value1 = 20;
  $value2 = 40;
  echo int_between(20, $value1, $value2) ? "true" : "false";

Danieldaniela

Answer 6

Guessing from the tag 'operand' you want to check a value?

$myValue = 5;
$minValue = 1;
$maxValue = 10;

if ($myValue >= $minValue && $myValue <= $maxValue) { 
  //do something
}

Park

Answer 7

This is a good solution.

function int_between($value, $min, $max) {
    return in_array($value, range($min, $max));
}

I think this one is faster than the above

function int_between2($value, $min, $max) {
    return $value == min($max, max($min, $value));
}

But, this is 3 times faster than others.

function int_between3($value, $min, $max) {
    return ($value >= $min && $value <= $max);
}

Gracie

Answer 8

If you just want to check the value is in Range, use this:

   MIN_VALUE = 1;
   MAX_VALUE = 100;
   $customValue = min(MAX_VALUE,max(MIN_VALUE,$customValue)));

Lull

This doesn´t check the value is between the range, it returns a new value that will be between the range. – Cavin

Must be explained, given custom value, will return custom value itself if in range – Cysticercoid

Answer 9

Try This

if (($val >= 1 && $val <= 10) || ($val >= 20 && $val <= 40))

This will return the value between 1 to 10 & 20 to 40.

Linus

Leaves out the fact that the number could be 1 or 10, 20 or 40. – Linus