Online PHP editor | output for JLYF9

@ 2019-12-24T03:18:07Z

<?php

$records = array(
array(
    'id' => 2135,
    'first_name' => 'John',
    'last_name' => 'Doe',
),
array(
    'id' => 3245,
    'first_name' => 'Sally',
    'last_name' => 'Smith',
),
array(
    'id' => 5342,
    'first_name' => 'Jane',
    'last_name' => 'Jones',
),
array(
    'id' => 5623,
    'first_name' => 'Peter',
    'last_name' => 'Doe',
)
);

$keys = array_keys($records[0]);
var_export($keys);
echo "\n";
echo "Number of columns: " , count($keys);

Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: array ( 0 => 'id', 1 => 'first_name', 2 => 'last_name', ) Number of columns: 3
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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