How to get the file name extension without actually knowing the extension












0















I have been trying this phpcode to get the extension of a file without actually knowing it. But I get this error Undefined offest: 0



My file name looks like this: adImage-9-3-1



Is it still possible to get the extension when file name consists of hyphen?



This is my php code:



    $fileName = "adImage-" . $ImageId . "-" . $adId . "-" . $userId . "*"; //used * to check for other possible results

$fileInfo = glob($fileName);

$fileExt = explode(".", $fileInfo[0]); //throws Undefined Offset:0 error
$fileActualExt = $fileExt[1];

print_r($fileActualExt); //empty output


I get this error as mentioned above:



Undefined offest: 0










share|improve this question


















  • 1





    Glob will returns an array containing the matched files/directories, an empty array if no file matched or FALSE on error. are you sur $fileInfo is not an empty array? Perhaps your missing a directory path to your images unless they are located at the same place your fil is?

    – Patrick Simard
    Dec 28 '18 at 14:54













  • show the $fileInfo . what data inside ?

    – Mohammed Yassine CHABLI
    Dec 28 '18 at 14:55
















0















I have been trying this phpcode to get the extension of a file without actually knowing it. But I get this error Undefined offest: 0



My file name looks like this: adImage-9-3-1



Is it still possible to get the extension when file name consists of hyphen?



This is my php code:



    $fileName = "adImage-" . $ImageId . "-" . $adId . "-" . $userId . "*"; //used * to check for other possible results

$fileInfo = glob($fileName);

$fileExt = explode(".", $fileInfo[0]); //throws Undefined Offset:0 error
$fileActualExt = $fileExt[1];

print_r($fileActualExt); //empty output


I get this error as mentioned above:



Undefined offest: 0










share|improve this question


















  • 1





    Glob will returns an array containing the matched files/directories, an empty array if no file matched or FALSE on error. are you sur $fileInfo is not an empty array? Perhaps your missing a directory path to your images unless they are located at the same place your fil is?

    – Patrick Simard
    Dec 28 '18 at 14:54













  • show the $fileInfo . what data inside ?

    – Mohammed Yassine CHABLI
    Dec 28 '18 at 14:55














0












0








0








I have been trying this phpcode to get the extension of a file without actually knowing it. But I get this error Undefined offest: 0



My file name looks like this: adImage-9-3-1



Is it still possible to get the extension when file name consists of hyphen?



This is my php code:



    $fileName = "adImage-" . $ImageId . "-" . $adId . "-" . $userId . "*"; //used * to check for other possible results

$fileInfo = glob($fileName);

$fileExt = explode(".", $fileInfo[0]); //throws Undefined Offset:0 error
$fileActualExt = $fileExt[1];

print_r($fileActualExt); //empty output


I get this error as mentioned above:



Undefined offest: 0










share|improve this question














I have been trying this phpcode to get the extension of a file without actually knowing it. But I get this error Undefined offest: 0



My file name looks like this: adImage-9-3-1



Is it still possible to get the extension when file name consists of hyphen?



This is my php code:



    $fileName = "adImage-" . $ImageId . "-" . $adId . "-" . $userId . "*"; //used * to check for other possible results

$fileInfo = glob($fileName);

$fileExt = explode(".", $fileInfo[0]); //throws Undefined Offset:0 error
$fileActualExt = $fileExt[1];

print_r($fileActualExt); //empty output


I get this error as mentioned above:



Undefined offest: 0







php






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Dec 28 '18 at 14:48









Jananath JayarathnaJananath Jayarathna

15




15








  • 1





    Glob will returns an array containing the matched files/directories, an empty array if no file matched or FALSE on error. are you sur $fileInfo is not an empty array? Perhaps your missing a directory path to your images unless they are located at the same place your fil is?

    – Patrick Simard
    Dec 28 '18 at 14:54













  • show the $fileInfo . what data inside ?

    – Mohammed Yassine CHABLI
    Dec 28 '18 at 14:55














  • 1





    Glob will returns an array containing the matched files/directories, an empty array if no file matched or FALSE on error. are you sur $fileInfo is not an empty array? Perhaps your missing a directory path to your images unless they are located at the same place your fil is?

    – Patrick Simard
    Dec 28 '18 at 14:54













  • show the $fileInfo . what data inside ?

    – Mohammed Yassine CHABLI
    Dec 28 '18 at 14:55








1




1





Glob will returns an array containing the matched files/directories, an empty array if no file matched or FALSE on error. are you sur $fileInfo is not an empty array? Perhaps your missing a directory path to your images unless they are located at the same place your fil is?

– Patrick Simard
Dec 28 '18 at 14:54







Glob will returns an array containing the matched files/directories, an empty array if no file matched or FALSE on error. are you sur $fileInfo is not an empty array? Perhaps your missing a directory path to your images unless they are located at the same place your fil is?

– Patrick Simard
Dec 28 '18 at 14:54















show the $fileInfo . what data inside ?

– Mohammed Yassine CHABLI
Dec 28 '18 at 14:55





show the $fileInfo . what data inside ?

– Mohammed Yassine CHABLI
Dec 28 '18 at 14:55












1 Answer
1






active

oldest

votes


















3














You can use this on your unknown file to see it's extension.



pathinfo($file, PATHINFO_EXTENSION)


to see the result :



var_dump(pathinfo($file, PATHINFO_EXTENSION));





share|improve this answer
























  • What do you mean by PATHINFO_EXTENSION ?

    – Jananath Jayarathna
    Dec 28 '18 at 15:12











  • It shows the extension of a file. the $file variable is your file path. Try it and see the results.

    – Amirhossein Tarmast
    Dec 28 '18 at 15:14













Your Answer






StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});














draft saved

draft discarded


















StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53960307%2fhow-to-get-the-file-name-extension-without-actually-knowing-the-extension%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown

























1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









3














You can use this on your unknown file to see it's extension.



pathinfo($file, PATHINFO_EXTENSION)


to see the result :



var_dump(pathinfo($file, PATHINFO_EXTENSION));





share|improve this answer
























  • What do you mean by PATHINFO_EXTENSION ?

    – Jananath Jayarathna
    Dec 28 '18 at 15:12











  • It shows the extension of a file. the $file variable is your file path. Try it and see the results.

    – Amirhossein Tarmast
    Dec 28 '18 at 15:14


















3














You can use this on your unknown file to see it's extension.



pathinfo($file, PATHINFO_EXTENSION)


to see the result :



var_dump(pathinfo($file, PATHINFO_EXTENSION));





share|improve this answer
























  • What do you mean by PATHINFO_EXTENSION ?

    – Jananath Jayarathna
    Dec 28 '18 at 15:12











  • It shows the extension of a file. the $file variable is your file path. Try it and see the results.

    – Amirhossein Tarmast
    Dec 28 '18 at 15:14
















3












3








3







You can use this on your unknown file to see it's extension.



pathinfo($file, PATHINFO_EXTENSION)


to see the result :



var_dump(pathinfo($file, PATHINFO_EXTENSION));





share|improve this answer













You can use this on your unknown file to see it's extension.



pathinfo($file, PATHINFO_EXTENSION)


to see the result :



var_dump(pathinfo($file, PATHINFO_EXTENSION));






share|improve this answer












share|improve this answer



share|improve this answer










answered Dec 28 '18 at 14:56









Amirhossein TarmastAmirhossein Tarmast

13516




13516













  • What do you mean by PATHINFO_EXTENSION ?

    – Jananath Jayarathna
    Dec 28 '18 at 15:12











  • It shows the extension of a file. the $file variable is your file path. Try it and see the results.

    – Amirhossein Tarmast
    Dec 28 '18 at 15:14





















  • What do you mean by PATHINFO_EXTENSION ?

    – Jananath Jayarathna
    Dec 28 '18 at 15:12











  • It shows the extension of a file. the $file variable is your file path. Try it and see the results.

    – Amirhossein Tarmast
    Dec 28 '18 at 15:14



















What do you mean by PATHINFO_EXTENSION ?

– Jananath Jayarathna
Dec 28 '18 at 15:12





What do you mean by PATHINFO_EXTENSION ?

– Jananath Jayarathna
Dec 28 '18 at 15:12













It shows the extension of a file. the $file variable is your file path. Try it and see the results.

– Amirhossein Tarmast
Dec 28 '18 at 15:14







It shows the extension of a file. the $file variable is your file path. Try it and see the results.

– Amirhossein Tarmast
Dec 28 '18 at 15:14




















draft saved

draft discarded




















































Thanks for contributing an answer to Stack Overflow!


  • Please be sure to answer the question. Provide details and share your research!

But avoid



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53960307%2fhow-to-get-the-file-name-extension-without-actually-knowing-the-extension%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







Popular posts from this blog

Monofisismo

Angular Downloading a file using contenturl with Basic Authentication

Olmecas