Php create file name from string

PHP Create File

Summary: in this tutorial, you will learn a couple of ways to create a new file in PHP.

Creating a file using the fopen() function

The fopen() function opens a file. It also creates a file if the file doesn’t exist. Here’s the syntax of the fopen() function:

fopen ( string $filename , string $mode , bool $use_include_path = false , resource $context = ? ) : resourceCode language: PHP (php)

To create a new file using the fopen() function, you specify the $filename and one of the following modes:

Mode	File Pointer
‘w+’	At the beginning of the file
‘a’	At the end of the file
‘a+’	At the end of the file
‘x’	At the beginning of the file
‘x+’	At the beginning of the file
‘c’	At the beginning of the file
‘c+’	At the beginning of the file

Except for the ‘a’ and ‘a+’ , the file pointer is placed at the beginning of the file.

If you want to create a binary file, you can append the character ‘b’ to the $mode argument. For example, the ‘wb+’ opens a binary file for writing.

The following example uses fopen() to create a new binary file and write some numbers to it:

 $numbers = [1, 2, 3, 4, 5]; $filename = 'numbers.dat'; $f = fopen($filename, 'wb'); if (!$f) < die('Error creating the file ' . $filename); > foreach ($numbers as $number) < fputs($f, $number); >fclose($f); Code language: HTML, XML (xml)

• First, define an array of five numbers from 1 to 5.
• Second, use the fopen() to create the numbers.dat file.
• Third, use the fputs() function to write each number in the $numbers array to the file.
• Finally, close the file using the fclose() function.

Creating a file using the file_put_contents() function

The file_put_contents() function writes data into a file. Here’s the syntax of the file_put_contents() function:

file_put_contents ( string $filename , mixed $data , int $flags = 0 , resource $context = ? ) : intCode language: PHP (php)

If the file specified by the $filename doesn’t exist, the function creates the file.

The file_put_contents() function is identical to calling the fopen() , fputs() , and fclose() functions successively to write data to a file.

The following example downloads a webpage using the file_get_contents() function and write HTML to a file:

 $url = 'https://www.php.net'; $html = file_get_contents($url); file_put_contents('home.html', $html);Code language: HTML, XML (xml)

• First, download a webpage https://www.php.net using the file_get_contents() function.
• Second, write the HTML to the home.html file using the file_put_contents() function

Summary

• Use the fopen() function with one of the mode w , w+ , a , a+ , x , x+ , c , c+ to create a new file.
• Use the file_put_contents() function to create a file and write data to it.
• The file_put_contents() function is identical to calling fopen() , fputs() , and fclose() functions successively to write data to a file.

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Php get file name from string php

this one is probably not as efficient as the strpos and substr combo mentioned above, but its fun: As i said. there are lots of string manipulation methods in php and you could do it many other ways. Solution 1: You can use this way Solution 2: 1.If you don’t want to type all the link path inside the «basename()» function, you can use: this will return the whole path — (example below) 2.THEN make use of the ‘baseline()’ function like this: and will return the desired file name as a string.

Get a filename from a string in PHP

You can use basename() this way

$filename = basename("/uploads/attachments/18/105/WordPress_3_Cookbook.pdf"); 

1.If you don’t want to type all the link path inside the «basename()» function, you can use:

this will return the whole path — (example below)

"/uploads/attachments/18/105/WordPress_3_Cookbook.pdf" 

2.THEN make use of the ‘baseline()’ function like this:

 echo basename($_SERVER['REQUEST_URI']); 

and will return the desired file name as a string.

 // the output will be : WordPress_3_Cookbook.pdf 

How to get file name from a path in PHP ?, The basename() function is an inbuilt function that returns the base name of a file if the path of the file is provided as a parameter to the

Extract part of file name

$pieces = explode('.', $filename); $morePieces = explode('-', $pieces[0]); $cityname = $morePieces[1]; 

Combine strpos() and substr() .

$filename = "location-cityName.xml"; $dash = strpos($filename, '-') + 1; $dot = strpos($filename, '.'); echo substr($filename, $dash, ($dot - $dash)); 

There are a few ways. this one is probably not as efficient as the strpos and substr combo mentioned above, but its fun:

$string = "location-cityName.xml"; list($location, $remainder) = explode("-", $string); list($cityName, $extension) = explode(".", $remainder); 

As i said. there are lots of string manipulation methods in php and you could do it many other ways.

PHP — How to get a file name from url string, To extract the query string, you want PHP_URL_QUERY , not PHP_URL_PATH . $x = «http://i.imgur.com/test.png?stuff»; parse_url(

Get file name from the string using php

, , , , '; // Here I replace the src with "src" and id with "id" $string = str_replace(['src', 'id'], ['"src"', '"id"'], $string); // Then I wrap all the string in brackets to convert the string to valid JSON string. $json = '[' . $string . ']'; // Finally I decode the JSON string into a PHP array. $data = json_decode($json); // Here I am going to save the images names. $images = []; // Here I itterate the json body entries and I push into the $images array // the image name foreach($data as $entry) < array_push($images, $entry->src); > // And here I just print it out, to make sure the output is the following: print_r($images); // OUTPUT: // Array // ( // [0] => brand.png // [1] => centpourcent.png // [2] => corsa.png // [3] => cta.png // [4] => neons.png // ) 

You can preg_match_all() use to get all file names.

$str = ', , , , '; $r = preg_match_all('~(?:src:")([^"]+)(?:")~',$str,$match); var_dump($match[1]) 

array(5) < [0]=>string(9) "brand.png" [1]=> string(16) "centpourcent.png" [2]=> string(9) "corsa.png" [3]=> string(7) "cta.png" [4]=> string(9) "neons.png" > 

If a valid JSON string is to be generated from the specified string, this can also be done with a regular expression. The algorithm also works without changes with keys other than ‘src’ and ‘id’.

$jsonStr = '['.preg_replace('~\w+(?=:)~','"$0"', $str).']'; 

PHP, get file name without file extension, $exploded_filepath = explode(«.», $filepath_or_URL); $extension = end($exploded_filepath); echo basename($filepath_or_URL, «.».$extension ); //

Php add string variable to the begining of file name before upload it [duplicate]

before upload no, but when you save it yes:

 $path = "../videos/"; $path .= $username.basename($_FILES['uploaded_file']['name']); 

Get file name from the string using php, You can preg_match_all() use to get all file names. $str = ‘,

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PHP String Exercises: Extract the file name from the specified string

Write a PHP script to extract the file name from the following string.

Sample String : ‘www.example.com/public_html/index.php’

Pictorial Presentation:

Sample Solution:

PHP Code Editor:

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PHP: Tips of the Day

Have a look at $_SERVER[‘REQUEST_URI’], i.e.

$actual_link = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

(Note that the double quoted string syntax is perfectly correct)

If you want to support both HTTP and HTTPS, you can use

$actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

Editor’s note: using this code has security implications. The client can set HTTP_HOST and REQUEST_URI to any arbitrary value it wants.

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Работа с именами файлов в PHP

Набор PHP функций для работы с путями и именами файлов.

Получить имя файла

echo basename('path/file.png'); // file.png

Имя файла без расширения

$info = pathinfo('path/file.png'); echo $info['filename']; // file /* или */ echo pathinfo('path/donut.png', PATHINFO_FILENAME); // file

Получить расширение файла

echo mb_strtolower(mb_substr(mb_strrchr('path/file.png', '.'), 1)); // png /* или */ echo pathinfo('path/file.png', PATHINFO_EXTENSION); // png

Заменить расширение файла

Заменить расширение .jpeg на .jpg:

$file_name = 'file.jpeg'; $file_new = preg_replace('/\.jpeg$/', '.jpg', $file_name); echo $file_new; // file.jpg

Заменить несколько расширений на одно (.jpg, .jpeg, .png на .webp):

$file_name = 'file.jpeg'; $file_new = preg_replace('/\.(jpg|jpeg|png)$/', '.webp', $file_name); echo $file_new; // file.webp

Дописать текст в конец названия файла

$info = pathinfo('path/file.png'); $name = $info['dirname'] . '/' . $info['filename'] . '-' . time() . '.' . $info['extension']; echo $name; // path/file-1610877618.png

Безопасное сохранение файла

Чтобы не затереть существующий файл на сервере можно применить данную функцию.

В функцию передаётся путь и имя файла, если на сервере уже существует такой файл, функция к концу файла приписывает префикс. Также если директория не существует, пытается её создать.

function safe_file($filename) < $dir = dirname($filename); if (!is_dir($dir)) < mkdir($dir, 0777, true); >$info = pathinfo($filename); $name = $dir . '/' . $info['filename']; $prefix = ''; $ext = (empty($info['extension'])) ? '' : '.' . $info['extension']; if (is_file($name . $ext)) < $i = 1; $prefix = '_' . $i; while (is_file($name . $prefix . $ext)) < $prefix = '_' . ++$i; >> return $name . $prefix . $ext; > // Если в директории есть файл log.txt, файл будет сохранен с названием log_1.txt file_put_contents(safe_file(__DIR__ . '/log.txt'), $text);

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