The language of PHP

1, basic syntax PHP when parsing a file, will look for the start and end tags, outside of the opening and closing tags will be ignored by the PHP engine comments: Use//And/* Here is the comment */2,php data type shaping (2345) floating-point (3.5) string ("ABCD") Consists of a series of characters, one character is a byte, 4 methods define the single quotation mark, double quotation mark, Heredoc Boolean type (true,false) array ordered map, the mapping is to associate a value to the Key object resource special type, A reference to an external resource was saved a null variable has no value, and the only value is null

The language of PHP