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@ 2025-11-10T11:28:52Z

<?php

class Lock { 
    function __destruct() {
        echo "***lock released now***\n";
    }
}

class LockedFile {
    private $lock;
    function __construct(string $path) {
        $this->lock = new Lock();
    }
}

class LineReader {
    function __construct(private LockedFile $file) {}
    function readLines() {
    }
}

function process_lines(LineReader $reader) {
    throw new Exception("readLines");
}

function process_file(string $path): string {
  try {
    $file = new LockedFile($path);
    $reader = new LineReader($file);
    process_lines($reader);
  } catch (Exception $e) {
    // release file
    echo "unsetting \$file, \$reader...\n";
    unset($file, $reader);

    // $file is still referenced via $e->getTrace()[0]['args'][0]->file 

    throw new Exception('Processing failed', previous: $e);
  }
 
  return $content;
}

process_file('/some/file.txt');

Output for git.master_jit, git.master: unsetting $file, $reader... Fatal error: Uncaught Exception: readLines in /in/lsicN:23 Stack trace: #0 /in/lsicN(30): process_lines(Object(LineReader)) #1 /in/lsicN(44): process_file('/some/file.txt') #2 {main} Next Exception: Processing failed in /in/lsicN:38 Stack trace: #0 /in/lsicN(44): process_file('/some/file.txt') #1 {main} thrown in /in/lsicN on line 38 ***lock released now***
Process exited with code 255.

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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