如何从数组中获取值[关闭]

Question

I am trying to get strings from a long array value.

for example

$array[1]='this is a good day. The number:1, class:math';
$array[2]='this is a bad day. The number:2, class:english';
$array[3]='this is a fine day. The number:3, class:physics';

I want to get the number:1 or class:math strings out of the array.

I tried

echo array_search('number:1',$array);

but it gave me nothing. I was wondering if there are better ways to do this. Thanks a lot!

Answer 1

I guess you're searching for something like the following. Searching for a needle inside of values of arrays.

<?php
function array_search_inline($needle, $haystack) {
    foreach ($haystack as $key => $value) {
        if (strpos($value, $needle) !== false) {
            return $key;
        }
    }
    return false;
}
?>

Note: array_search simply compares the array's values and does not search inside of them.