PHP syntax highlight bug with SQL strings with as word

[a-bentofreire]

If I activate mysql-syntax extension, the following code will consider the comment below and the echos as strings:

<?php
$sql = 'SELECT users.username as u1, users2.username as u2'
  .' users.username as u3, users2.username as u4';

// echo "sql:$sql\n"; // DEBUG INFO
echo "hello world";
echo "hello world";

However If I remove the as u2, this problem stops from occurring. The code below has no problems:

<?php
$sql = 'SELECT users.username as u1, users2.username'
  .' users.username as u3, users2.username as u4';

// echo "sql:$sql\n"; // DEBUG INFO
echo "hello world";
echo "hello world";

mysql-syntax disabled:

mysql-syntax enabled:

mysql-syntax enabled but no as u2:

[MasterOdin]

Another example of this that I encountered was:

<?php

$test = "SELECT count(*) FROM (SELECT * FROM table) AS subquery";
print($b);

where the ways I found to fix this was:

1. Remove the AS subquery bit
2. Add a space to the end of the string