Chapter 7 Answers
The conversion specifier you would use to display a floating-point number is
To take the input string “Happy Birthday” and output the string “**Happy”, you could use a
printfstatement such as
printf("%'*7.5s", "Happy Birthday");.
To send the output from
printfto a variable instead of to a browser, you would use
To create a Unix timestamp for 7:11 AM on May 2, 2016, you could use the command
$timestamp = mktime(7, 11, 0, 5, 2, 2016);.
You would use the
w+file access mode with
fopento open a file in write and read mode, with the file truncated and the file pointer at the start.
The PHP command for deleting the file file.txt is
The PHP function
file_get_contentsis used to read in an entire file in one go. It will also read a file from across the Internet if provided with a URL.
The PHP associative array
$_FILEScontains the details about uploaded files.
execfunction enables the running of system commands.
In XHTML 1.0, the tag
<input type=file name=file size=10>should be replaced with the following syntax:
<input type="file" name="file" size="10" />. All parameters must be quoted, and tags without closing tags must be self-closed using