- ucfirst: documentation ( source)
<?php
$search_tags = array(
"happy",
"summer",
"beach",
"glasses",
"umbrella",
"funny",
"people",
"music",
"rap"
);
$accounts = array(
"account A",
"account B",
"account C"
);
$accounts = new ArrayIterator($accounts);
echo ucfirst($accounts->current()), PHP_EOL;