In order to enable developers to programmatically handle errors, when a error occurs the GrabzIt PHP API throws a GrabzItException which contains a error code that directly maps to a error. How each error code maps to an error is indicated in the below table, this avoids the need to parse error messages.

An example of a GrabzItException exception using error codes to determine how to handle a error is shown below.

try
{
    $grabzIt = new \GrabzIt\GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret")%>");
    $grabzIt->URLToImage("https://www.tesla.com");
    $grabzIt->SaveTo("images/result.jpg");
}
catch(\GrabzIt\GrabzItException $e)
{
    if ($e->getCode() == \GrabzIt\GrabzItException::PARAMETER_NO_URL)
    {
        //Please enter a URL
    }
}

Error Code Lookup

Error Value	Description	Code
PARAMETER_NO_URL	URL is missing	100
PARAMETER_INVALID_URL	Specified URL is invalid	101
PARAMETER_NON_EXISTANT_URL	Specified URL does not exist	102
PARAMETER_MISSING_APPLICATION_KEY	Application key is missing	103
PARAMETER_UNRECOGNISED_APPLICATION_KEY	Application key is not recognised	104
PARAMETER_MISSING_SIGNATURE	Signature is missing	105
PARAMETER_INVALID_SIGNATURE	Signature is invalid	106
PARAMETER_INVALID_FORMAT	Specified format is invalid	107
PARAMETER_INVALID_COUNTRY_CODE	Specified country code is invalid	108
PARAMETER_DUPLICATE_IDENTIFIER	Specified identifier already exists	109
PARAMETER_MATCHING_RECORD_NOT_FOUND	Matching record not found	110
PARAMETER_INVALID_CALLBACK_URL	Specified callback URL is invalid	111
PARAMETER_NON_EXISTANT_CALLBACK_URL	Callback URL does not exist	112
PARAMETER_IMAGE_WIDTH_TOO_LARGE	Specified image width too large	113
PARAMETER_IMAGE_HEIGHT_TOO_LARGE	Specified image height too large	114
PARAMETER_BROWSER_WIDTH_TOO_LARGE	Specified browser height too large	115
PARAMETER_BROWSER_HEIGHT_TOO_LARGE	Specified browser width too large	116
PARAMETER_DELAY_TOO_LARGE	Specified delay too large	117
PARAMETER_INVALID_BACKGROUND	Invalid background parameter for PDF	118
PARAMETER_INVALID_INCLUDE_LINKS	Invalid include links parameter for PDF or DOCX	119
PARAMETER_INVALID_INCLUDE_OUTLINE	Invalid include outline parameter for PDF	120
PARAMETER_INVALID_PAGE_SIZE	Invalid PDF page size	121
PARAMETER_INVALID_PAGE_ORIENTATION	Invalid page orientation for PDF	122
PARAMETER_VERTICAL_MARGIN_TOO_LARGE	Vertical margin for PDF too large	123
PARAMETER_HORIZONTAL_MARGIN_TOO_LARGE	Horizontal margin for PDF too large	124
PARAMETER_INVALID_COVER_URL	Invalid cover URL for PDF	125
PARAMETER_NON_EXISTANT_COVER_URL	Specified cover URL for PDF does not exist	126
PARAMETER_MISSING_COOKIE_NAME	Missing cookie name	127
PARAMETER_MISSING_COOKIE_DOMAIN	Missing cookie domain	128
PARAMETER_INVALID_COOKIE_NAME	Invalid cookie name	129
PARAMETER_INVALID_COOKIE_DOMAIN	Invalid cookie domain	130
PARAMETER_INVALID_COOKIE_DELETE	Invalid cookie delete value	131
PARAMETER_INVALID_COOKIE_HTTP	Invalid cookie HTTP value	132
PARAMETER_INVALID_COOKIE_EXPIRY	Invalid cookie expiry	133
PARAMETER_INVALID_CACHE_VALUE	Invalid cache value	134
PARAMETER_INVALID_DOWNLOAD_VALUE	Invalid download value	135
PARAMETER_INVALID_SUPPRESS_VALUE	Invalid suppress value	136
PARAMETER_MISSING_WATERMARK_IDENTIFIER	Missing watermark identifier	137
PARAMETER_INVALID_WATERMARK_IDENTIFIER	Invalid watermark identifier	138
PARAMETER_INVALID_WATERMARK_XPOS	Invalid watermark x position	139
PARAMETER_INVALID_WATERMARK_YPOS	Invalid watermark y position	140
PARAMETER_MISSING_WATERMARK_FORMAT	Watermark not found	141
PARAMETER_WATERMARK_TOO_LARGE	Watermark too large	142
PARAMETER_MISSING_PARAMETERS	Missing parameters	143
PARAMETER_QUALITY_TOO_LARGE	Quality parameter too large	144
PARAMETER_QUALITY_TOO_SMALL	Quality parameter too small	145
PARAMETER_REPEAT_TOO_SMALL	Repeat parameter too small	149
PARAMETER_INVALID_REVERSE	Reverse parameter invalid	150
PARAMETER_FPS_TOO_LARGE	Frames per second parameter too large	151
PARAMETER_FPS_TOO_SMALL	Frames per second parameter too small	152
PARAMETER_SPEED_TOO_FAST	Speed parameter too fast	153
PARAMETER_SPEED_TOO_SLOW	Speed parameter too slow	154
PARAMETER_INVALID_COMBINATION	The combination of the duration, FPS, width and height parameters is too large	155
PARAMETER_START_TOO_SMALL	Start parameter too small	156
PARAMETER_DURATION_TOO_SMALL	Duration parameter too small	157
PARAMETER_NO_HTML	No HTML was specified	163
PARAMETER_INVALID_TARGET_VALUE	Invalid target specified	165
PARAMETER_INVALID_HIDE_VALUE	Invalid element to hide specified	166
PARAMETER_INVALID_INCLUDE_IMAGES	Include links parameter for DOCX	167
PARAMETER_INVALID_EXPORT_URL	Invalid export URL	168
PARAMETER_INVALID_WAIT_FOR_VALUE	Invalid wait for specified	169
PARAMETER_INVALID_TRANSPARENT_VALUE	Invalid transparent specified	170
PARAMETER_INVALID_ENCRYPTION_KEY	Invalid encryption key specified	171
PARAMETER_INVALID_NO_ADS	Invalid advert value specified	172
PARAMETER_INVALID_PROXY	Invalid HTTP proxy settings provided	173
PARAMETER_INVALID_NO_NOTIFY	Invalid cookie notification value specified	174
PARAMETER_INVALID_HD	Invalid high definition value specified	176
PARAMETER_INVALID_MEDIA_TYPE	Invalid media type value specified	177
PARAMETER_INVALID_PASSWORD	Invalid password value specified	178
PARAMETER_INVALID_MERGE	Invalid merge identifier specified	179
PARAMETER_INVALID_CLICK_VALUE	Invalid CSS selector to click specified	180
NETWORK_SERVER_OFFLINE	Server offline	200
NETWORK_GENERAL_ERROR	General network error	201
NETWORK_DDOS_ATTACK	Distributed Denial of Service attack	202
RENDERING_ERROR	General rendering error	300
RENDERING_MISSING_SCREENSHOT	Missing screenshot	301
GENERIC_ERROR	General error	400
UPGRADE_REQUIRED	Upgrade required	500
FILE_SAVE_ERROR	File save error	600
FILE_NON_EXISTANT_PATH	File path does not exist	601