Use this code to grab a Tex-to-MathML conversion while using PHP. https://tra.pt/math for details
Update CURLOPT_POSTFIELDS with your TeX math function.
<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://trapt.vercel.app/api/mathml",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_POSTFIELDS => "G_{\\mu\\nu}=8\\pi G\\left(T_{\\mu\\nu}+{\\large \\rho}_\\Lambda {\\large g}_{\\mu\\nu} \\right)",
CURLOPT_HTTPHEADER => [
"Accept: application/json",
"content-type: text/plain"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}