Online PHP editor | output for PFXqi

@ 2020-11-13T16:17:58Z

<?php

class Test {
    public $define; // null
    public $redefine; // null

    public function define(?bool $something = null): ?bool {
        return $this->define = $this->define ?? $something;
    }

    public function redefine(?bool $something = null): ?bool {
        return $this->redefine = $something ?? $this->redefine;
    }
}

$test = function(?bool $value) {
    var_export($value ?? 'Not set!' ?: 'False!');
    echo PHP_EOL;
};

$foo = new Test();

$test($foo->define());
$test($foo->define(true));
$test($foo->define());
$test($foo->define(false));
$test($foo->define());

$test($foo->redefine());
$test($foo->redefine(true));
$test($foo->redefine());
$test($foo->redefine(false));
$test($foo->redefine());

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 - 8.3.27, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1: 'Not set!' true true true true 'Not set!' true true 'False!' 'False!'
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.
Output for 8.3.28: /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28)
Process exited with code 1.

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