PHP ?? ???? ?? ???? ?? ??? ??? ??? ?? ? ?? ?????. ?? ???? ?? ???? ???? ?? ?? ?????? ?? ????? ??? ?? ???? ?? ??? ?? PHP? ??? ??? ?????? ???? ??? ?? ? ? ?? ??? ?? ?????. ??? ?? PHP? ??? PHP ?? ??? ????? ? ?? ??? ?? ???? ???? ???? ?? ???? ???? ? ??? ??? ??? ???.

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

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

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?? ????? ???? ?? ???? ???? PHP ???? ??? ?? ???? ????.

public SplFileInfo::getExtension() : string, filename etc.

??,

• public: ????? ??? ???? ??? ???? ? ??? ???? ? ???? ??? ??????.
• SplFileInfo: ??? ??? ??? ???? ? ???? ?? ??? ??? ?????.
• getExtension(): PHP ?? ?? ??? ???? ? ???? PHP ?????.
• ???: ???? getExtension() ??? ??? ???? ?? ?????.

PHP?? ?? ???? ??? ????

?? ????? ???? ?? ???? ?? ??? ?? ??? ????. PHP? ??? ??? ??? ???? ?? ??? ? ??? ???? ?????. ??? PHP?? ?? ???? ???? ?? ???? ???, PHP?? ???? ?? ??? ??? ????.

• ?? ??? ?? ??? ???? ???? ??? ???? ? ????? ???? substr()? ?? ??? ??? ???? PHP ???? ???? ???? ????? ?? ??? ? ????.
• ???? ???? ??? ???? ? ???? ? ?? ???? strrchr()? ????. ? ??? ?? ??? ??? ? ???? ??? ??? ?? ? ????? ??? ?????? ? ? ????.
• PHP pathinfo() ??? PHP? ?? ?? ??? ???? ? ???? ? ?? ??? ????, ??? ???? ??? ???? ??, ?? ??? ?? ???? ??? ?? ??? ???? ? ?????. ??, ?? ???
• SplFileInfo? ?? ???? ?? ??? ????? ??? ???? ???? ???? ?? ???? ??? ?? ????.
• PHP ?????? ?? ??? ?? ?? ????? ??? ????. ??? PHP ????? ?? ??? ??? ?? ? ????. ? ?? ??? ?? ??? ??? ??? ????? ????? ?? ??? ?? ???? ?????? ? ???? ???? ???. ??????.
• ???? ????? ?? ???? ?? ??? ?? ??? ????. ? ?? pathinfo() ?? ??? ?? ?? ?? ??? ? ?? ??? ?? ? ????. ??? ??? ??? ??? ?? ??? ??? ?? ???? ?? ? ?? ?? ??? ??? ??? ?????.
• PHP ??? ???? ?? null? ?? ??? ???? ?? ???? PHP?? pathinfo() ??? ???? ?? ???? ??? ???? ????. ? ??? ??? ??? ??? ??? ? null? ???? ?????. ?? ???? ???? ??? ? ??? ???? ??, ??? ???? ??? ?? ??? ?? ??? ???? ?? ? ????? ?? ???? ?????.
• ??? ??? ??? PHP ???? ????? ? ?? ?? ?? ??? ???? ????? ???? ? ?? ?????.
• PHP?? ?? ???? ?? ?? ?? ?? ??? ?????? ??? ??? ???? ???? ????.

PHP get ?? ???? ?

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

?? #1

? ????? SplFileInfo? ?? ??? ???? getExtension ??? ?????. ? ??? ???? ??? ??? ?? PHP ??????? ????? ??? ??? ???? ??? ? ????.

??:

<?php
$in_1 = new SplFileInfo('foam.txt');
var_dump($in_1->getExtension());
$in_1 = new SplFileInfo('import_ant.tar.gz');
var_dump($in_1->getExtension());
$in_1 = new SplFileInfo('image_with.jpeg');
var_dump($in_1->getExtension());
?>

??:

Example #2

This program demonstrates the pathinfo, which tells about the given file’s information and can be used to get the directory name, base name, file name, and extension. It will return the text file as shown in the output.

Code:

<?php
$fil_nm = 'directory_1/anu.txt';
$extnsn = pathinfo($fil_nm, PATHINFO_EXTENSION);
var_dump($extnsn);
?>

Output:

Example #3

This program demonstrates the approach to get the file extension if in a file with multiple periods or dots exists then also pathinfo will work as shown in the output.

Code:

<?php
$fl_nm = 'fldr/exmpl.txt.jpeg.tar.gz';
$extnsn = pathinfo($fl_nm, PATHINFO_EXTENSION);
var_dump($extnsn);
?>

Output:

Example #4

This program demonstrates the custom function which is used for returning substring by calling the function wherever required, as shown in the output.

Code:

<?php
function get_fl_extnsn($fname) {
return substr(strrchr($fname,'.'),1);
}
echo get_fl_extnsn('extension.jpg.txt');
?>

Output:

Example #5

This program demonstrates the output if there is no extension if an empty string with pathinfo() function will return as shown.

Code:

<?php
$fl_pth = 'path/to_1/file_n/';
$extn = pathinfo($fl_pth, PATHINFO_EXTENSION);
var_dump($extn);
?>

Output:

Example #6

This program demonstrates the pathinfo regarding the file name with an extension which is being included and is manipulated as per the requirement as shown in the output. It can support a multi dot file structure for getting the extension.

Code:

<?php
$pth_pp = pathinfo('include/bin.include.php');
echo $pth_pp['extension'], "\n";
echo $pth_pp['filename'], "\n";
?>

Output:

Conclusion

PHP get file extension like other programming languages is used for identifying the type of PHP file that will get uploaded and manipulated by giving some must information like a directory, extension, file name, basename. It is advantageous when some troubleshooting is required from getting out of a stuck situation.

? ??? PHP? ?? ???? ????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!