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Partial Read (Byte Ranges)

Demonstrates reading specific byte ranges from a file instead of loading the entire content.

What It Covers

Reading a subset of bytes with read($from, $to)
$from is the starting byte position (inclusive)
$to is the ending byte position (exclusive)
Calling read() with no arguments reads the entire file
Throws FileException if the requested range exceeds the file size

Use Cases

Resumable downloads
Reading headers from large binary files
Sampling content without loading everything into memory

Key Methods

File::read(int $from = -1, int $to = -1) — When both default to -1, reads the full file. Otherwise reads bytes from $from up to $to.

Run

php examples/partial-read.php