The error handling plenum

PHP 4 applications mostly
Try to mimic exceptions
Well known through the PEAR project
http://pear.php.net


<?php

function writeToFile( $file, $content )
{
    if ( ( $f = fopen( $file, "w" ) ) === false )
    {
        return PEAR::raiseError(
            "File not writeable",
            23,
            PEAR_ERROR_RETURN,
            $file
        );
    }
    // ...
}

if ( PEAR::isError(
    $err = writeToFile( "/tmp/foo", "99 klingons..." ) 
    ) )
{
    // handle error...
}
?>


<?php

PEAR::setErrorHandling(
    PEAR_ERROR_CALLBACK,
    "handleError"
);

function handleError( $err )
{
    // handle error...
}

writeToFile( "/tmp/foo" );

?>