Online PHP editor | output for tg8CA

@ 2019-06-15T16:47:36Z

<?php

$pattern = '/^[a-z]{5,8}_(\d{1,2})\.jpg$/';
$names = [
    'asd_1234.jpg',
    'asdfg_12.jpg',
    'asdfgj_72.jpg',
    'as123_1.jpg',
    'asdfg_.jpg',
    'qweasdfgj_24.jpg',
];

foreach ($names as $entry) {
    if (preg_match($pattern, $entry, $matches)) {
        echo "{$entry}: ${matches[1]}\n";
    } else {
        echo "{$entry} doesn't match\n";
    }
}

Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14: Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/tg8CA on line 15 asd_1234.jpg doesn't match asdfg_12.jpg: 12 asdfgj_72.jpg: 72 as123_1.jpg doesn't match asdfg_.jpg doesn't match qweasdfgj_24.jpg doesn't match
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33: asd_1234.jpg doesn't match asdfg_12.jpg: 12 asdfgj_72.jpg: 72 as123_1.jpg doesn't match asdfg_.jpg doesn't match qweasdfgj_24.jpg doesn't match

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