Description
mixed
sscanf ( string str, string
format [, string var1])
The function sscanf() is the
input analog of printf(). sscanf()
reads from the string str
and interprets it according to the specified format. If only two parameters were
passed to this function, the values parsed will be returned
as an array.
Any whitespace in the format string matches any
whitespace in the input string. This means that even a tab \t
in the format string can match a single space character in
the input string.
範例 1. sscanf()
Example
// getting the serial number
$serial = sscanf("SN/2350001","SN/%d");
// and the date of manufacturing
$mandate = "January 01 2000";
list($month, $day, $year) = sscanf($mandate,"%s %d %d");
echo "Item $serial was manufactured on: $year-".substr($month,0,3)."-$day\n";
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If optional parameters are passed, the function will return
the number of assigned values. The optional parameters must
be passed by reference.
範例 2. sscanf() - using
optional parameters
// get author info and generate DocBook entry
$auth = "24\tLewis Carroll";
$n = sscanf($auth,"%d\t%s %s", $id, $first, $last);
echo " author id='$id'
firstname $first /firstname
surname $last /surname
/author \n";
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See also fscanf(),
printf(), and
sprintf().