sscanf()? ??? ??? ?? ?? ??? ? ?? ??? ?? ???? ???? PHP? ?? ??? ?????. ?? 2?? ????? ???? ??? ??? ????, ?? ???? ??? ????? ?? ?? ????? ???? ?? ??? ???? ?? ??? ?????. ?? ???? ???? ???? ? ??? ??? ????, ???? ?? ???? ?? ?? ?? ??? NULL? ???.

?? ????? ?? ?? ??

? ??, ????? ??, ????? ??? ?

PHP sscanf() ??

??? PHP sscanf()? ?????.

sscanf(input_string, format, arg1, arg2, arg3....)

?? ????:

1. input_string: ??? ?? ??????.

2. ??:???? ?? ?? ??? ?? ??? ??? ? ????.

• %%: ? ??? ??? ??? ?????.
• %c: ? ??? ??? ASCII ?? ?? ??? ?????.
• %d: ? ??? ?? ?? 10?? ?? ?????. (0, ?? ?? ??? ? ??)
• %e: ? ??? ??? ???? ???? ?????. (?: 1.2e+2)
• %u: 0?? ??? ?? ?? ?? ???? ???? ? ?????.
• %f: ??????? ????? ?????.
• %o: 8??? ????? ?????.
• %s: ??? ??? ?????.
• %x: 16??? ?? ???? ?????.
• %X: 16??? ???? ?????.

% ??? ?? ??? ???? ? ?? ?? ?? ?? ????. (?: %0.3f)

• +(??? ?? ?? ?? ??? +? – ?? ?? ??? ???? ????? ?? ?? ?????.)
• ' (???? ??? ??? ???? ???? ??? ??????. ?? ???? ?? ???? ???. ?: ??? x? ???? %x30s).
• – (??? ?? ?? ?? ?? ?????).
• [0-9] (?? ?? ???? ?? ??? ?????.)
• . [0-9] (10??? ? ?? ?? ???? ?? ??? ?????.)

• arg1: ?? ??? ?????? ???? ???? ? ?? ?????.
• arg2: ??? ?????? ???? ???? ? ?? ?????.
• arg++: ?? ?? ???? ???? ?? ???? ?? ??? ?????.

?? ?: ???? ? ?? ??? ??? ? ????.

• ? ??? ?? ????? ??? ?? 2??? ?? ???? ?? ???? ?????.
• ?? ??? ????? ???? ?? ??? ???? ?? ????? ?????.
• ??? ? ?? ??? ???? ???? ?? ? ??? ??? ?????.
• ??? ? ?? ???? ???? ?? ?? ?? ??? NULL? ?????.
• ??? ???? ? ?? ???? ??? -1? ?????.

PHP sscanf()? ?

??? ??? ????.

?? #1

??:

<?php
$text = "Random sentence goes here with numbers 5 and 8";
$f = sscanf($text,"%s %s %s %s %s %s %d %s %d");
print_r($f);
?>

??:

? ???? ??? ?? ???? ?????. ?? ?? sscanf ??? ???? ?? ???? ???? ??? ??? ?????. ??? ???? ????? ???? ??? ?????. ??? ???? ???? ???? ?????.

?? #2

??:

<?php
// fetching the unique ID of product
list($ID) = sscanf("SN/680001", "SN/%d");
// fetching date of manufacturing
$manf = "March 03 2001";
// fetching the date of expiry
$expiry = "March 03 2002";
// Parsing using sscanf function
list($mon, $day, $yr) = sscanf($manf, "%s %d %d");
list($mon, $day, $yr) = sscanf($expiry, "%s %d %d");
echo "Product $ID was manufactured on $manf and will expire on: $yr-" . substr($mon, 0, 3) . "-$day\n";
?>

??:

? ???? ?? ?? ID ? ???? ?? ?? ??? ???? ???? ??? ?????. ??? ? ?? ??????? ID ??? ??? %d ???? ?? ?????. ???? ??? ?? ??? ?? ??? ???? sscanf ??? ???? ??? ??? ???? ?? ?????. ?? ?? ?? ??? ?? ??? ? ???? ?????. ??? ??? ???? ?? ??? ?? ??? ??? ? ????.

Example #3

Code:

<?php
// Fetching designer info and to generate DressInfo entry
$design = "13\tCoco Chanel";
$str = sscanf($design, "%d\t%s %s", $ID, $firstname, $lastname);
// Displaying all the above details after formatting
echo "<author id='$ID'>
<firstname>$firstname</firstname>
<surname>$lastname</surname>
</author>\n";
?>

Output:

In this example we are using sscanf function to first parse the ID and name of the designer. Then displaying the same in HTML format by splitting the names into first name and last name.

Example #4

Code:

<?php
// We are initializing the string here
$arr = "Character PHP and number 7";
// Parsing the input string according to different format
$format = sscanf($arr,"%s %c%c%c %s %s? %d");
print_r($format);
?>

Output:

In the above example we are first initializing the string as required and this time including a few character sets in combination with strings. The same we are parsing using the sscanf function.

Conclusion

As seen above in all the examples, sscanf function in PHP is basically used to parse any type of the input string as per the requirements. There are a few cases where this function shows inefficiency to parse the strings, where there may be incorrect output when we try to parse a tab delimited string also having normal spaces in between. It also does not give the expected output if in the code there is a file name with its extension where it finds difficult to separate the two in presence of a “.”.

? ??? PHP ???()? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!