Online PHP editor | output for WQtRi

@ 2020-12-14T03:24:08Z

<?php

$strings = [
    ')(8234@#$ABCFG3478&* hello', // mix
    '456456', // numeric
    'ghijkl', // alphabetic
    '!@#$%^&*(', // non-alphanumeric
];

foreach ($strings as $string) {
    var_export(
        [
            'string' => $string,
            'firstAlphaNumeric1' => preg_match('/[a-z0-9]/i', $string, $match) ? $match[0] : null,
            'firstAlphaNumeric2' => $string[strcspn($string, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789')] ?? null,
            'firstAlphaNumeric3' => $string[strcspn($string, 'A..Zabcdefghijklmnopqrstuvwxyz0123456789')] ?? null,
        ]
    );
    echo "\n";
}

Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3: array ( 'string' => ')(8234@#$ABCFG3478&* hello', 'firstAlphaNumeric1' => '8', 'firstAlphaNumeric2' => '8', 'firstAlphaNumeric3' => '8', ) array ( 'string' => '456456', 'firstAlphaNumeric1' => '4', 'firstAlphaNumeric2' => '4', 'firstAlphaNumeric3' => '4', ) array ( 'string' => 'ghijkl', 'firstAlphaNumeric1' => 'g', 'firstAlphaNumeric2' => 'g', 'firstAlphaNumeric3' => 'g', ) array ( 'string' => '!@#$%^&*(', 'firstAlphaNumeric1' => NULL, 'firstAlphaNumeric2' => NULL, 'firstAlphaNumeric3' => NULL, )

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