Test PHP symlink() function

test-symlink-creation.php

<?php

function gh_symlink($target, $link) {
    return symlink($target, $link);
}

$use_alt_symlinks_creation = FALSE;
function gh_symlink2($target, $link) {
    global $use_alt_symlinks_creation;
    $success = !$use_alt_symlinks_creation && symlink($target, $link);
    if (!$success) {
        exec("ln -s " . escapeshellarg($target) . " " . escapeshellarg($link));
        $success = gh_is_file($link);
        if ($success) {
            $use_alt_symlinks_creation = TRUE;
        }
    }
    return $success;
}

$target = "file1";
$link = "link1";
file_put_contents($target, "test");
var_dump(exec("ls -l " . escapeshellarg($target)));

$success = gh_symlink($target, $link);
var_dump($success);
var_dump($use_alt_symlinks_creation);
var_dump(exec("ls -l " . escapeshellarg($link)));

if (!$success) {
    $success = gh_symlink2($target, $link);
    var_dump($success);
    var_dump($use_alt_symlinks_creation);
    var_dump(exec("ls -l " . escapeshellarg($link)));
}

@unlink($link);