php check if all values in array are the same code example

Example 1: check if all values in array are equal php

if(count(array_unique($array)) === 1) {
    // all values in $array are the same
} else {
    // at least 1 value in $array is different
}

Example 2: php check if any of multiple values in array

function in_array_any($needles, $haystack) {
   return !empty(array_intersect($needles, $haystack));
}

echo in_array_any( [3,9], [5,8,3,1,2] ); // true, since 3 is present
echo in_array_any( [4,9], [5,8,3,1,2] ); // false, neither 4 nor 9 is present

Example 3: php check if all values in array are equal

$allvalues = array('true', 'true', 'true');
if (count(array_unique($allvalues)) === 1 && end($allvalues) === 'true') {
}