问题
I'm writing a small repository for my little app team's Java code, and I have this error all over my code.
$base = explode(".", $class)[0];
The problem occurs only with this one line of code, every time. As far as I know, the above is correct PHP syntax, so what's going on?
Parse error: syntax error, unexpected '[' in .../mitc/code/index.php on line 27
If you'd like to see the error, it's at http://chancehenrik.x10.mx/mitc/code/ and elsewhere on my site.
回答1:
That's called array dereferencing and only works in PHP 5.4+. You're probably running PHP 5.3.x wherever you are getting that error.
See results based on different PHP versions
回答2:
$exploded = explode(".", $class);
$base = $exploded[0];
回答3:
To work on older versions of PHP (<5.4), you should do:
list($base) = explode(".", $class);
That is:
list($a, $b, $c) = array(1, 2, 3);
Now $a=1, $b=2, and $c=3.
来源：https://stackoverflow.com/questions/14742717/unexpected-bracket-php