php比较每个数组中的值

Question

I have an array like below:

$number = array(1,2,3,4,5);

I have a value like below:

$my_num = 2;

I want to compare $my_num variable in every $number array.

My expected output like this: No, Yes, No, No, No.

I tried like this:

<?php
if(in_array($my_num, $number))
{
    echo 'Yes';
}
else
{
    echo 'No';
}

But I can only get 'Yes' from above output.

How should I modify it in order to get my expected output?

Answer 1

Like I said in the comment above, all you need is a foreach to iterate through your array and compare your data.

foreach($numbers as $num){
    echo ($num == $my_num) ? 'Yes' : 'No';
}

Source: http://php.net/manual/en/control-structures.foreach.php

Answer 2

Here's one option , essentially comparing $my_num to each array value and mapping it to a Yes or No. The commas are for your expected result only.

$english = array_map(function($val) use ($my_num) {
    return ($val == $my_num) ? 'Yes' : 'No';
}, $number);
echo implode(', ', $english); // No, Yes, No, No, No

Answer 3

You can use a foreach loop. It loops through the array assigning the value of the current array member to the variable $num.

foreach ($number as $num) {
    if ($num == $my_num) {
        echo 'Yes';
    } else {
        echo 'No';
    }
}