Ideas for handling PHP Warnings: * begin ... rescue (inspired by Ruby) * trap

rescue.php

<?php
  function rescue($mask, $handle) {
    return function($code, $message, $file, $line, $context) use($mask, $handle) {
      if ($code & $mask) {
        return $handle($code, $message, $file, $line, $context);
      }
    };
  }

  function begin($try, $handle) {
    set_error_handler($handle);
    try {
      $try();
      restore_error_handler();
    } catch (Exception $e) {
      restore_error_handler();
      throw $e;
    }
  }

  // {{{ main
  begin(function() {
    trigger_error('Test');
  }, 
  rescue(E_ALL, function($code, $message, $file, $line, $context) {
    printf("Caught #%d: %s @ %s:%d\n", $code, $message, $file, $line);
    var_dump($context);
  }));
  // }}}
?>

trap.php

<?php
  function trap($mask, $exception, $try) {
    set_error_handler(function($code, $message, $file, $line, $context) use($mask, $exception) {
      if ($code & $mask) raise($exception, $message);
    });

    try {
      $try();
      restore_error_handler();
    } catch (Exception $e) {
      restore_error_handler();
      throw $e;
    }
  }

  // {{{ main
  trap(E_ALL, 'io.IOException', function() {
    trigger_error('Test');
  }); 
  // }}}
?>