php file not null

A second look into the PHP specs tells that is_null() checks whether a valu...

A second look into the PHP specs tells that is_null() checks whether a value is null or not. So, you may pass any VALUE to it, eg. the result of a function.

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this code here is in case you want to check if a file exists in another ser...

this code here is in case you want to check if a file exists in another server: .. This results in files that appear to NOT exist on a symbolic link, even though they are very .. throw new Exception('The url to check must be a not empty string');.

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file_get_contents() will read the whole file while filesize() uses stat() ....

file_get_contents() will read the whole file while filesize() uses stat() . clearstatcache(); if(filesize($path_to_your_file)) { // your file is not empty }.

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Use the is_uploaded_file PHP function instead: if(is_uploaded_file($_FILES[...

Use the is_uploaded_file PHP function instead: if(is_uploaded_file($_FILES['image']['tmp_name'])) { //code here }.

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if($_FILES['cover_image']['size'] == 0) { // No file wa...

if($_FILES['cover_image']['size'] == 0) { // No file was selected for upload, and cover_image is not empty { //execute whatever code you want }.

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function isset_file($file) { return (isset($file) && $file['er...

function isset_file($file) { return (isset($file) && $file['error']!= UPLOAD_ERR_NO_FILE); } if(isset_file($_FILES['input_name'])) { // It's not empty }.

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if (empty($_FILES['logo']['name'])) { // No file was se...

if (empty($_FILES['logo']['name'])) { // No file was selected for upload, your There is a section in php documentation about file handling.

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If you want to get a CSV file, I would suggest using a method like fgetcsv(...

If you want to get a CSV file, I would suggest using a method like fgetcsv() . if(!empty($content)){ print_r();}{ else{ // Do something if no content }.

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Try this: if(isset($_FILES['gallery']) && count($_FILES[&...

Try this: if(isset($_FILES['gallery']) && count($_FILES['gallery']['error']) == 1 && $_FILES['gallery']['error'][0] > 0){ //file not selected } else.

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The function file_get_contents returns the string that's in the file. ...

The function file_get_contents returns the string that's in the file. If the file contains no data, then file_get_contents returns an empty string.

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Prior to PHP , empty() only supports variables; anything else will result i...

Prior to PHP , empty() only supports variables; anything else will result in a parse error. In other words, the following will not work.

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Note: you cannot use empty() on the $_FILES['file_upoad'] array, ...

Note: you cannot use empty() on the $_FILES['file_upoad'] array, because even if no file is uploaded, the array is still populated and the error.

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$_FILES['uploaded_file']['error']. And yes, it's a...

$_FILES['uploaded_file']['error']. And yes, it's a good idea to check if such key exists at all - as with anything coming from the user, there is no.

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Here's a check-list for file uploading in PHP: Make sure your file des...

Here's a check-list for file uploading in PHP: Make sure your file destination and tmp/upload directories do not have spaces in them.

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NOT NULL - Each row must contain a value for that column, null values are n...

NOT NULL - Each row must contain a value for that column, null values are not allowed; DEFAULT value - Set a default value that is added when no other value.

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