如何检查我的字符串是否以PHP中的某个单词开头？ [关闭]

I'm trying to do some sort of license system.

But there is diffrent kinds of licenses. There is a Personal, Team, and Admin license. The license looks like

<License type>-<Randomly generated 50 characters string>

EX:

Personal-imiY2cdnpL01EzbZWr2YWzukkJmC3K6BMQpZU2wgfsOehCruDr

But when it comes to the license checking, then I want to know what kind of license it is. So I just want to make a check like (if $lincense startsWith("Personal") etc

if (substr('Personal-imiY2cdnpL01EzbZWr2YWzukkJmC3K6BMQpZU2wgfsOehCruDr', 0, 8) == 'Personal')

As an alternative to substr() you could also use strpos()

$str = 'Personal-imiY2cdnpL01EzbZWr2YWzukkJmC3K6BMQpZU2wgfsOehCruDr';
if (strpos($str, 'Personal') === 0) {
    // do stuff
}