或使用爆炸：

$array = explode(' > ', $data['subject']);
echo $array[0]; // Languages
echo $array[1]; // English

https://php.net/substr

$subject = substr($data['subject'], strpos($data['subject'], "> "));

但你应该看看爆炸：https://php.net/explode

$levels = explode(" > ", $data['subject']);
$subject = $levels[0];
$language = $levels[1];

如果您需要〉之前和之后的数据，我将使用分解。

$data['subject'] = "Languages > English";
$data['subject'] = array_map('trim', explode('>', $data['subject'])); // Explode data and trim all spaces 
echo $data['subject'][0].'<br />'; // Result: Languages
echo $data['subject'][1]; // Result: English

你可以这么做，
1.字符串将转换为数组
1.然后保留数组的最后一个值

$data['subject']= "Languages > English";
$subject = end(explode('>',$data['subject']));