How to check if an integer is within a range of numbers in PHP?
PhpRangeIntPhp Problem Overview
How can I check if a given number is within a range of numbers?
Php Solutions
Solution 1 - Php
The expression:
($min <= $value) && ($value <= $max)
will be true if $value is between $min and $max, inclusively
See the PHP docs for more on comparison operators
Solution 2 - Php
You can use filter_var
filter_var(
$yourInteger,
FILTER_VALIDATE_INT,
array(
'options' => array(
'min_range' => $min,
'max_range' => $max
)
)
);
This will also allow you to specify whether you want to allow octal and hex notation of integers. Note that the function is type-safe. 5.5 is not an integer but a float and will not validate.
Detailed tutorial about filtering data with PHP:
Solution 3 - Php
Might help:
if ( in_array(2, range(1,7)) ) {
echo 'Number 2 is in range 1-7';
}
Solution 4 - Php
You could whip up a little helper function to do this:
/**
* Determines if $number is between $min and $max
*
* @param integer $number The number to test
* @param integer $min The minimum value in the range
* @param integer $max The maximum value in the range
* @param boolean $inclusive Whether the range should be inclusive or not
* @return boolean Whether the number was in the range
*/
function in_range($number, $min, $max, $inclusive = FALSE)
{
if (is_int($number) && is_int($min) && is_int($max))
{
return $inclusive
? ($number >= $min && $number <= $max)
: ($number > $min && $number < $max) ;
}
return FALSE;
}
And you would use it like so:
var_dump(in_range(5, 0, 10)); // TRUE
var_dump(in_range(1, 0, 1)); // FALSE
var_dump(in_range(1, 0, 1, TRUE)); // TRUE
var_dump(in_range(11, 0, 10, TRUE)); // FALSE
// etc...
Solution 5 - Php
if (($num >= $lower_boundary) && ($num <= $upper_boundary)) {
You may want to adjust the comparison operators if you want the boundary values not to be valid.
Solution 6 - Php
You can try the following one-statement:
if (($x-$min)*($x-$max) < 0)
or:
if (max(min($x, $max), $min) == $x)
Solution 7 - Php
Some other possibilities:
if (in_array($value, range($min, $max), true)) {
echo "You can be sure that $min <= $value <= $max";
}
Or:
if ($value === min(max($value, $min), $max)) {
echo "You can be sure that $min <= $value <= $max";
}
Actually this is what is use to cast a value which is out of the range to the closest end of it.
$value = min(max($value, $min), $max);
Example
/**
* This is un-sanitized user input.
*/
$posts_per_page = 999;
/**
* Sanitize $posts_per_page.
*/
$posts_per_page = min(max($posts_per_page, 5), 30);
/**
* Use.
*/
var_dump($posts_per_page); // Output: int(30)
Solution 8 - Php
using a switch case
switch ($num){
case ($num>= $value1 && $num<= $value2):
echo "within range 1";
break;
case ($num>= $value3 && $num<= $value4):
echo "within range 2";
break;
.
.
.
.
.
default: //default
echo "within no range";
break;
}
Solution 9 - Php
Another way to do this with simple if/else range. For ex:
$watermarkSize = 0;
if (($originalImageWidth >= 0) && ($originalImageWidth <= 640)) {
$watermarkSize = 10;
} else if (($originalImageWidth >= 641) && ($originalImageWidth <= 1024)) {
$watermarkSize = 25;
} else if (($originalImageWidth >= 1025) && ($originalImageWidth <= 2048)) {
$watermarkSize = 50;
} else if (($originalImageWidth >= 2049) && ($originalImageWidth <= 4096)) {
$watermarkSize = 100;
} else {
$watermarkSize = 200;
}
Solution 10 - Php
I created a function to check if times in an array overlap somehow:
/**
* Function to check if there are overlapping times in an array of \DateTime objects.
*
* @param $ranges
*
* @return \DateTime[]|bool
*/
public function timesOverlap($ranges) {
foreach ($ranges as $k1 => $t1) {
foreach ($ranges as $k2 => $t2) {
if ($k1 != $k2) {
/* @var \DateTime[] $t1 */
/* @var \DateTime[] $t2 */
$a = $t1[0]->getTimestamp();
$b = $t1[1]->getTimestamp();
$c = $t2[0]->getTimestamp();
$d = $t2[1]->getTimestamp();
if (($c >= $a && $c <= $b) || $d >= $a && $d <= $b) {
return true;
}
}
}
}
return false;
}
Solution 11 - Php
Here is my little contribution:
function inRange($number) {
$ranges = [0, 13, 17, 24, 34, 44, 54, 65, 200];
$n = count($ranges);
while($n--){
if( $number > $ranges[$n] )
return $ranges[$n]+1 .'-'. $ranges[$n + 1];
}
Solution 12 - Php
I have function for my case
Use:
echo checkRangeNumber(0);
echo checkRangeNumber(1);
echo checkRangeNumber(499);
echo checkRangeNumber(500);
echo checkRangeNumber(501);
echo checkRangeNumber(3001);
echo checkRangeNumber(999);
//return
0
1-500
1-500
1-500
501-1000
3000-3500
501-1000
function checkRangeNumber($number, $per_page = 500)
{
//$per_page = 500; // it's fixed number, but...
if ($number == 0) {
return "0";
}
$num_page = ceil($number / $per_page); // returns 65
$low_limit = ($num_page - 1) * $per_page + 1; // returns 32000
$up_limit = $num_page * $per_page; // returns 40
return "$low_limit-$up_limit";
}
Solution 13 - Php
function limit_range($num, $min, $max)
{
// Now limit it
return $num>$max?$max:$num<$min?$min:$num;
}
$min = 0; // Minimum number can be
$max = 4; // Maximum number can be
$num = 10; // Your number
// Number returned is limited to be minimum 0 and maximum 4
echo limit_range($num, $min, $max); // return 4
$num = 2;
echo limit_range($num, $min, $max); // return 2
$num = -1;
echo limit_range($num, $min, $max); // return 0
Solution 14 - Php
$ranges = [
1 => [
'min_range' => 0.01,
'max_range' => 199.99
],
2 => [
'min_range' => 200.00,
],
];
foreach($ranges as $value => $range){
if(filter_var($cartTotal, FILTER_VALIDATE_FLOAT, ['options' => $range])){
return $value;
}
}
Solution 15 - Php
Thank you so much and I got my answer by adding a break in the foreach loop and now it is working fine.
Here are the updated answer:
foreach ($this->crud->getDataAll('shipping_charges') as $ship) {
if ($weight >= $ship->low && $weight <= $ship->high) {
$val = $ship->amount;
break;
}
else
{
$val = 900;
}
}
echo $val ;