sscanf
(PHP 4 >= 4.0.1, PHP 5)
sscanf --
Parses input from a string according to a format
Description
mixed
sscanf ( string str, string format [, mixed &...] )
The function sscanf() is the input analog of
printf(). sscanf() reads
from the string str and interprets it
according to the specified format, which is
described in the documentation for sprintf(). If only
two parameters were passed to this function, the values parsed
will be returned as an array. Otherwise, if optional parameters are passed,
the function will return the number of assigned values. The optional
parameters must be passed by reference.
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.
例子 1. sscanf() Example
<?php
// 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.
例子 2. sscanf() - using optional parameters
<?php
// 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().