check-coverage.php

<?php
$inputFile  = $argv[1];
$percentage = min(100, max(0, (int) $argv[2]));

if (empty($inputFile)) {
    $inputFile = './coverage/coverage.xml';
}

if (!file_exists($inputFile)) {
    throw new InvalidArgumentException('Invalid input file provided');
}

if (!$percentage) {
    throw new InvalidArgumentException('An integer checked percentage must be given as second parameter');
}

$xml             = new SimpleXMLElement(file_get_contents($inputFile));
$metrics         = $xml->xpath('//file/metrics');
$totalElements   = 0;
$checkedElements = 0;

foreach ($metrics as $metric) {
    $totalElements   += (int) $metric['elements'];
    $checkedElements += (int) $metric['coveredelements'];
}

$coverage = (($checkedElements / $totalElements) * 100);
if ($coverage < $percentage) {
    echo 'Code coverage is '.$coverage.'%, which is below the accepted '.$percentage.'%'.PHP_EOL;
    exit(1);
}
echo 'Code coverage is '.$coverage.'% - OK!'.PHP_EOL;