class UndefinedFunctionFatalErrorHandler in Zircon Profile 8

ErrorHandler for undefined functions.

@author Fabien Potencier <[e-mail]>

Hierarchy

• class \Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface

2 files declare their use of UndefinedFunctionFatalErrorHandler

ErrorHandler.php in vendor/symfony/debug/ErrorHandler.php

UndefinedFunctionFatalErrorHandlerTest.php in vendor/symfony/debug/Tests/FatalErrorHandler/UndefinedFunctionFatalErrorHandlerTest.php

File

vendor/symfony/debug/FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php, line 22

Namespace

Symfony\Component\Debug\FatalErrorHandler

class UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface {

  /**
   * {@inheritdoc}
   */
  public function handleError(array $error, FatalErrorException $exception) {
    $messageLen = strlen($error['message']);
    $notFoundSuffix = '()';
    $notFoundSuffixLen = strlen($notFoundSuffix);
    if ($notFoundSuffixLen > $messageLen) {
      return;
    }
    if (0 !== substr_compare($error['message'], $notFoundSuffix, -$notFoundSuffixLen)) {
      return;
    }
    $prefix = 'Call to undefined function ';
    $prefixLen = strlen($prefix);
    if (0 !== strpos($error['message'], $prefix)) {
      return;
    }
    $fullyQualifiedFunctionName = substr($error['message'], $prefixLen, -$notFoundSuffixLen);
    if (false !== ($namespaceSeparatorIndex = strrpos($fullyQualifiedFunctionName, '\\'))) {
      $functionName = substr($fullyQualifiedFunctionName, $namespaceSeparatorIndex + 1);
      $namespacePrefix = substr($fullyQualifiedFunctionName, 0, $namespaceSeparatorIndex);
      $message = sprintf('Attempted to call function "%s" from namespace "%s".', $functionName, $namespacePrefix);
    }
    else {
      $functionName = $fullyQualifiedFunctionName;
      $message = sprintf('Attempted to call function "%s" from the global namespace.', $functionName);
    }
    $candidates = array();
    foreach (get_defined_functions() as $type => $definedFunctionNames) {
      foreach ($definedFunctionNames as $definedFunctionName) {
        if (false !== ($namespaceSeparatorIndex = strrpos($definedFunctionName, '\\'))) {
          $definedFunctionNameBasename = substr($definedFunctionName, $namespaceSeparatorIndex + 1);
        }
        else {
          $definedFunctionNameBasename = $definedFunctionName;
        }
        if ($definedFunctionNameBasename === $functionName) {
          $candidates[] = '\\' . $definedFunctionName;
        }
      }
    }
    if ($candidates) {
      sort($candidates);
      $last = array_pop($candidates) . '"?';
      if ($candidates) {
        $candidates = 'e.g. "' . implode('", "', $candidates) . '" or "' . $last;
      }
      else {
        $candidates = '"' . $last;
      }
      $message .= "\nDid you mean to call " . $candidates;
    }
    return new UndefinedFunctionException($message, $exception);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
UndefinedFunctionFatalErrorHandler::handleError	public	function	Attempts to convert an error into an exception. Overrides FatalErrorHandlerInterface::handleError