Php
/
Streams
- 1 Basics 5
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Quotes S
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Constants S
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Control structures S
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Reference S
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Number systems S
- 2 Variables 4
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Definition S
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Variable variable S
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Exists S
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Type casting S
- 3 Operators 5
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Aritmetic S
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Bitwise S
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String S
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Comparison S
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Logical S
- 4 Function 4
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Definition S
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Anonymous S
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Reference S
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Variable arguments S
- 5 Array 7
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Basics S
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Operations S
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Create S
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Search S
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Modify S
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Sort S
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Storage S
- 6 String 9
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Basics
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Compare
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Search
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Replace
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Format
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Regexp
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Parse
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Formating
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Json
- 7 Streams 6
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File open
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Read file
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Read csv
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File contents
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Context
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Ob_start
- 8 Oop 6
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Object instantiation S
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Class constructor
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Interfaces, abstract
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Resource visibility
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Class constants
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Namespaces
- 9 Features 9
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Autoload
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Class reflection
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Magic methods
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Exceptions S
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Late static binding
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Type hinting
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SPL
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PHPUNIT
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PHAR
- 10 Versions 2
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Php7.4 S
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Php8.0 S
- 11 Http 4
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Headers
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File Uploads
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Cookies
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Sessions
- 12 Design Patterns 4
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Singleton Pattern S
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Observer Pattern
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Strategy Pattern
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Registry
- 13 Modern Php 8
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Composer S
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Slim Framework
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Autoloader
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Package
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Releases
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Generators
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Dependency Injection
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Middleware
- 14 Create Framework 7
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App
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Http Foundation
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Front Controller
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Routing
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Render Controller
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Resolver
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SoC
- 15 Frameworks 4
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Symfony v5
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Laravel v8
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Laminas v3
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Codeigniter v4
- 16 Composer 5
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Guzzle
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Carbon
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Faker
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Math
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Requests
- 17 Symfony 6
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Routes S
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Annotations
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Flex
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Controllers
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Doctrine
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Templating
R
Q
fread
Unlike fgets(), it does not concern itself with newline characters.
$file = "file.txt";
if ($fd = fopen($file, "w+")) {
fwrite($fd, "aaarn");
fwrite($fd, "bbb");
fclose($fd);
}
if ($fd = fopen($file, "r")) {
$contents = fread($fd, filesize($file));
echo $contents . "<br>"; // aaa bbb
rewind($fd);
echo fread($fd, 2) . "<br>"; // aa
rewind($fd);
echo fread($fd);
// Warning: fread() expects exactly 2 parameters, 1 given
}
Exists
Checks whether a file or directory exists.
if (!file_exists('paht/to/foo.txt')) { // true / false
throw new Exception ("The file does not exists");
}
Seeks
Seeks on a file pointer.
if ($fd = fopen("file.txt", "w+")) {
fwrite($fd, "abcrn");
fwrite($fd, "def");
fclose($fd);
}
if ($fd = fopen("file.txt", "r")) {
fseek($fd, 2); // <span class='keyword_code'>advance 2 chars</span>
echo fgets($fd) . "<br>"; // c
fseek($fd, 2, SEEK_SET); // default (go to begging of the file)
echo fgets($fd) . "<br>"; // c
fseek($fd, 0, SEEK_CUR); // start from current position
echo fgets($fd) . "<br>"; // def
fseek($fd, -2, SEEK_END); // start from the end of the file
echo fgets($fd) . "<br>"; // ef
}
Tell
Returns the current position of the file read/write pointer (or FALSE).
$fd = fopen("example.txt", "r");
fseek($fd, 2);
echo <span class='keyword_code'>ftell($fd)</span>; // 2
$fd = fopen("example.txt", "r");
$data = fgets($fd, 2);
echo ftell($fd); // 1
➥ Questions