Answers for "in php if array contain string and number if we return the array the number are come first in array why"

check if array has value php

$myArr = [38, 18, 10, 7, "15"];

echo in_array(10, $myArr); // TRUE
echo in_array(19, $myArr); // TRUE

// Without strict check
echo in_array("18", $myArr); // TRUE
// With strict check
echo in_array("18", $myArr, true); // FALSE

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
}