PHP, Parse error: syntax error, unexpected T_FUNCT

问题:

This question already has answers here:

PHP anonymous function causes syntax error on some installations (3 answers)

Closed 6 years ago.

class test
{
    public $do;
    function __construct($data="")
    {
        $this->parse($data);
    }
    private function parse($data)
    {
        // Decoding the functions
        $decoded_data = json_decode($data,true); 
        array_walk_recursive($decoded_data,function(&$function) {
            $first_line = strtok($function, "\n");
            preg_match("/\/\*#(.*?)\#*\//",$first_line,$matches);
            $function = create_function($matches[1],$function);
        });
        $this->do = $decoded_data;  
    }
}

Parse error: syntax error, unexpected T_FUNCTION

The error is in:

array_walk_recursive($decoded_data,function(&$function)

回答1:

Check your PHP version, anonymous functions are only supported on 5.3+