exec timesten procedure from PHP

Do you mean a PL/SQL procedure?  Try the same as for Oracle DB.  See The Underground PHP and Oracle Manual

For example:

<?php

// TimesTen PL/SQL Procedure Calls

error_reporting(E_ALL);  // In PHP 5.3 use E_ALL|E_STRICT"
ini_set('display_errors', 'On');
  
$c = oci_connect("appuser", "oracle", "sampledb_1122");
var_dump($c);

$sql = <<<'EOF'
create or replace procedure cjproc(p_o out number) as
begin
  p_o := 3;
end;
EOF;

$s = oci_parse($c, $sql);
oci_execute($s);

$sql = <<<'EOF'
begin cjproc(:x); end;
EOF;
$s = oci_parse($c, $sql);
oci_bind_by_name($s, ":x", $x, 10, OCI_B_INT);
oci_execute($s);
var_dump($x);

// This one needs admin privs
$c2 = oci_connect("adm", "oracle", "sampledb_1122");
$s = oci_parse($c2, "call ttRamPolicySet('inUse', 5)");
oci_execute($s);

?>