Install Deployer php

install.php

<?php
$version = '6.4.3';
echo "Downloading Deployer manifest file...\n";
$manifest = json_decode(file_get_contents('https://deployer.org/manifest.json'), true);
$sha1 = $url = null;
foreach ($manifest as $manifestEntry)
{
    if ($manifestEntry['version'] == $version)
    {
        $sha1 = $manifestEntry['sha1'];
        $url = $manifestEntry['url'];
        break;
    }
}
if (null == $sha1)
{
    throw new Exception("Deployer version `$version` not found in manifest.");
}
echo "Downloading Deployer version $version...\n";
file_put_contents("/bin/dep", fopen($url, 'r'));
echo "Checking downloaded file...\n";
if (sha1_file("/bin/dep") != $sha1)
{
    throw new Exception("Deployer download seems to be corrupt.");
}
echo "Making Deployer writeable...\n";
exec('chmod +x /bin/dep');
echo "Deployer installed.\n";