# is_a() consequences.....

- Thread: https://externals.io/message/54961
- Original archive: https://news-web.php.net/php.internals/54961
- Started by Alan Knowles on 2011-08-26T02:55:01+00:00
- Messages: 1
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## #54961 — Alan Knowles — 2011-08-26T02:55:01+00:00

URL: https://externals.io/message/54961#54961

I've committed the fixes for my two of my packages to support this change..

Who ever thinks this is such a great idea, could you kindly file bugs 
against all the packages below to request they fix their 'bugs' or 
verify the input........

http://pear.php.net/bugs/

Since the behaviour of `is_a()` is now is_a(mixed, string), if any of the 
first arguments is a string that matches the class name, or it's parent 
or causes the autoloader to load a class such a class it will produce 
unpredicatable results now.

This is not a full list, as I only have a partial copy of all pear packages.

Date/Span.php:182:        if (is_a($time, 'date_span')) {
Date/Span.php:184:        } elseif (is_a($time, 'date') and 
is_a($format, 'date')) {
Date/Span.php:536:        if (!is_a($date1, 'date') or !is_a($date2, 
'date')) {
Date/Span.php:571:        if (is_a($time, 'date_span')) {
Date.php:204:        } elseif (is_a($date, 'Date')) {
Date.php:552:        if(is_a($tz, 'Date_Timezone')) {
Date.php:746:        if (!is_a($span, 'Date_Span')) {
Date.php:821:        if (!is_a($span, 'Date_Span')) {
DB/common.php:1252:        if (is_a($result, 'DB_result')) {
DB/mysqli.php:996:        if (!is_a($id, 'mysqli_result')) {
DB.php:594:        return is_a($value, 'DB_Error');
HTTP/Request.php:692:        if (!is_a($this->_url, 'Net_URL')) {
HTTP/Request.php:1078:        if (!is_a($listener, 
'HTTP_Request_Listener')) {
HTTP/Request.php:1095:        if (!is_a($listener, 
'HTTP_Request_Listener') ||
I18Nv2/DecoratedList.php:51:        if (is_a($list, 'I18Nv2_CommonList') ||
I18Nv2/DecoratedList.php:52:            is_a($list, 
'I18Nv2_DecoratedList')) {
Image/Graph.php:161:        } elseif (is_a($params, 'Image_Canvas')) {
Image/Graph.php:211:        if (!is_a($this->_canvas, 'Image_Canvas')) {
Image/Graph.php:595:        if (!(is_a($part1, 'Image_Graph_Element'))) {
Image/Graph.php:599:        if (!(is_a($part2, 'Image_Graph_Element'))) {
Image/Graph/Title.php:154:        if (is_a($this->_parent, 
'Image_Graph_Plotarea')) {
Image/Graph/Title.php:161:        } elseif (!is_a($this->_parent, 
'Image_Graph_Layout')) {
Image/Graph/Plot.php:119:        if (!is_a($dataset, 
'Image_Graph_Dataset')) {
Image/Graph/Plot.php:123:                    if (!is_a($dataset[$key], 
'Image_Graph_Dataset')) {
Image/Graph/Plot.php:756:        if (is_a($this->_fillStyle, 
'Image_Graph_Fill')) {
Image/Graph/Common.php:49:        return is_a(get_parent_class($object), 
$class_name);
Image/Graph/Common.php:180:        } elseif (is_a($this->_parent, 
'Image_Graph_Common')) {
Image/Graph/Common.php:200:        if (!is_a($element, 
'Image_Graph_Font')) {
Image/Graph/Common.php:295:        if (($this->_canvas == null) || 
(!is_a($this->_canvas, 'Image_Canvas'))) {
Image/Graph/Marker/Average.php:65:            (is_a($this->_parent, 
'Image_Graph_Plot')))
Image/Graph/Marker/Array.php:71:        if (is_a($marker, 
'Image_Graph_Element')) {
Image/Graph/Marker.php:105:        if (is_a($this->_secondaryMarker, 
'Image_Graph_Marker')) {
Image/Graph/Legend.php:99:            if (is_a($plotarea, 
'Image_Graph_Plotarea')) {
Image/Graph/Legend.php:103:                    if (is_a($element, 
'Image_Graph_Plot')) {
Image/Graph/Legend.php:162:                    if (is_a($element, 
'Image_Graph_Plot')) {
Image/Graph/Legend.php:194:                    if (is_a($element, 
'Image_Graph_Plot')) {
Image/Graph/Legend.php:259:        if (is_a($plotarea, 
'Image_Graph_Plotarea')) {
Image/Graph/Legend.php:332:                    if (is_a($element, 
'Image_Graph_Plot')) {
Image/Graph/Legend.php:348:                    if (is_a($element, 
'Image_Graph_Plot')) {
Image/Graph/Legend.php:371:                    if (is_a($element, 
'Image_Graph_Plot')) {
Image/Graph/Line/Array.php:74:        if (is_a($style, 
'Image_Graph_Element')) {
Image/Graph/Plotarea.php:221:        if (is_a($element, 
'Image_Graph_Plot')) {
Image/Graph/Plotarea.php:225:        } elseif (is_a($element, 
'Image_Graph_Grid')) {
Image/Graph/Plotarea.php:252:        } elseif (is_a($element, 
'Image_Graph_Axis')) {
Image/Graph/Plotarea.php:334:            if (is_a($dataset, 
'Image_Graph_Dataset')) {
Image/Graph/Plotarea.php:624:                if (is_a($element, 
'Image_Graph_Plot')) {
Image/Graph/Plotarea.php:625:                    if (((is_a($element, 
'Image_Graph_Plot_Bar')) ||
Image/Graph/Plotarea.php:626:                        (is_a($element, 
'Image_Graph_Plot_Step')) ||
Image/Graph/Plotarea.php:627:                        (is_a($element, 
'Image_Graph_Plot_Dot')) ||
Image/Graph/Plotarea.php:628:                        (is_a($element, 
'Image_Graph_Plot_CandleStick')) ||
Image/Graph/Plotarea.php:629:                        (is_a($element, 
'Image_Graph_Plot_BoxWhisker')) ||
Image/Graph/Plotarea.php:630:                        (is_a($element, 
'Image_Graph_Plot_Impulse'))) &&
Image/Graph/Layout/Horizontal.php:94:        if (!is_a($part1, 
'Image_Graph_Layout')) {
Image/Graph/Layout/Horizontal.php:99:        } elseif (!is_a($part2, 
'Image_Graph_Layout')) {
Image/Graph/Plot/Smoothed/Radar.php:63:        if (is_a($this->_parent, 
'Image_Graph_Plotarea_Radar')) {
Image/Graph/Plot/Radar.php:89:        if (is_a($this->_parent, 
'Image_Graph_Plotarea_Radar')) {
Image/Graph/Plot/Odo.php:650:            if (is_a($this->_fillStyle, 
"Image_Graph_Fill")) {
Image/Graph/Plot/Pie.php:510:            if (is_a($this->_fillStyle, 
"Image_Graph_Fill")) {
Image/Graph/Plotarea/Radar.php:193:                if (is_a($element, 
'Image_Graph_Plot')) {
Image/Graph/Element.php:159:        if (!is_a($background, 
'Image_Graph_Fill')) {
Image/Graph/Element.php:220:        if (!is_a($borderStyle, 
'Image_Graph_Line')) {
Image/Graph/Element.php:330:        if (!is_a($fillStyle, 
'Image_Graph_Fill')) {
Image/Graph/Element.php:426:        if (!is_a($font, 'Image_Graph_Font')) {
Image/Graph/Grid.php:106:        if (is_a($this->_secondaryAxis, 
'Image_Graph_Axis_Radar')) {
Log/composite.php:202:        if (!is_a($child, 'Log')) {
Log/composite.php:222:        if (!is_a($child, 'Log') || 
!isset($this->_children[$child->_id])) {
Log.php:772:        if (!is_a($observer, 'Log_observer')) {
Log.php:794:        if (!is_a($observer, 'Log_observer') ||
Mail/sendmail.php:112:        if (is_a($result, 'PEAR_Error')) {
Mail/sendmail.php:117:        if (is_a($recipients, 'PEAR_Error')) {
Mail/sendmail.php:123:        if (is_a($headerElements, 'PEAR_Error')) {
Mail/smtpmx.php:257:        if (is_a($result, 'PEAR_Error')) {
Mail/smtpmx.php:263:        if (is_a($headerElements, 'PEAR_Error')) {
Mail/smtpmx.php:278:        if (is_a($recipients, 'PEAR_Error')) {
Mail/smtpmx.php:286:            if (is_a($mx, 'PEAR_Error')) {
Mail/smtpmx.php:306:                if (is_a($res, 'PEAR_Error')) {
Mail/smtpmx.php:330:                if (is_a($res, 'PEAR_Error')) {
Mail/smtpmx.php:339:            if (is_a($res, 'PEAR_Error')) {
Mail/smtpmx.php:346:            if (is_a($res, 'PEAR_Error')) {
Mail/smtpmx.php:355:                if (is_a($res, 'PEAR_Error')) {
Mail/smtpmx.php:366:            if (is_a($res, 'PEAR_Error')) {
Mail/smtpmx.php:393:            if (is_a($res, 'PEAR_Error')) {
Mail/mail.php:97:        if (is_a($result, 'PEAR_Error')) {
Mail/mail.php:120:        if (is_a($headerElements, 'PEAR_Error')) {
Mail/smtp.php:233:        if (is_a($headerElements, 'PEAR_Error')) {
Mail/smtp.php:267:        if (is_a($recipients, 'PEAR_Error')) {
Mail/smtp.php:275:            if (is_a($res, 'PEAR_Error')) {
Mail/smtp.php:287:        if (is_a($res, 'PEAR_Error')) {
Mail/mimeDecode.php:200:        $isStatic = empty($this) || !is_a($this, 
__CLASS__);
Mail.php:96:        if (is_a($result, 'PEAR_Error')) {
Mail.php:163:                if (is_a($addresses, 'PEAR_Error')) {
Mail.php:231:        if (is_a($addresses, 'PEAR_Error')) {
MDB2/Driver/Datatype/Common.php:1379:            if 
(isset($db->function) && is_a($db->function, 
'MDB2_Driver_Function_Common')) {
MDB2/Driver/Datatype/Common.php:1408:            if 
(isset($db->function) && is_a($db->function, 
'MDB2_Driver_Function_Common')) {
MDB2/Driver/Datatype/Common.php:1437:            if 
(isset($db->function) && is_a($db->function, 
'MDB2_Driver_Function_Common')) {
MDB2.php:596:        if (is_a($data, 'MDB2_Error')) {
MDB2.php:623:        return is_a($value, 'MDB2_Driver_Common');
MDB2.php:640:        return is_a($value, 'MDB2_Result');
MDB2.php:657:        return is_a($value, 'MDB2_Result_Common');
MDB2.php:674:        return is_a($value, 'MDB2_Statement');
OLE.php:240:        if (is_a($blockIdOrPps, 'OLE_PPS')) {
PEAR/ErrorStack.php:636:        if (is_a($logger, 'Log')) {
PEAR/Common.php:256:            if (is_a($ui, 'PEAR_Frontend')) {
PEAR/Common.php:541:        if (!is_a($pf, 'PEAR_PackageFile_v2')) {
PEAR/Autoloader.php:175:            if (is_a($obj, $classname)) {
PEAR/Frontend.php:79: 
is_a($GLOBALS['_PEAR_FRONTEND_SINGLETON'], $uiclass)) {
PEAR/Frontend.php:94:            if (is_a($obj, 'PEAR_Frontend')) {
PEAR/Frontend.php:119: 
is_a($GLOBALS['_PEAR_FRONTEND_SINGLETON'], get_class($uiobject))) {
PEAR/Frontend.php:123:        if (!is_a($uiobject, 'PEAR_Frontend')) {
PEAR/Downloader/Package.php:1310:            if (!is_a($param, 
'PEAR_Downloader_Package')) {
PEAR/Registry.php:201:                    if (!is_a($pear_channel, 
'PEAR_ChannelFile') || !$pear_channel->validate()) {
PEAR/Registry.php:226:                    if (!is_a($pecl_channel, 
'PEAR_ChannelFile') || !$pecl_channel->validate()) {
PEAR/Registry.php:250:                    if (!is_a($doc_channel, 
'PEAR_ChannelFile') || !$doc_channel->validate()) {
PEAR/Registry.php:941:        if (!is_a($channel, 'PEAR_ChannelFile')) {
PEAR/Registry.php:1028:            if (!is_a($channel, 
'PEAR_ChannelFile')) {
PEAR/Registry.php:1327:        if (!is_a($info, 'PEAR_PackageFile_v1') 
&& !is_a($info, 'PEAR_PackageFile_v2')) {
PEAR/Registry.php:1824:        if ($ret && is_a($this->_config, 
'PEAR_Config')) {
PEAR/Registry.php:1841:        if (!is_a($channel, 'PEAR_ChannelFile') 
|| !$channel->validate()) {
PEAR/Registry.php:1851:        if (!$update && $ret && 
is_a($this->_config, 'PEAR_Config')) {
PEAR/Builder.php:272:            if (is_a($pkg, 'PEAR_PackageFile_v1')) {
PEAR/PackageFile/v2.php:1899:              !is_a($this->_v2Validator, 
'PEAR_PackageFile_v2_Validator')) {
PEAR/PackageFile/v2.php:1914:              !is_a($this->_v2Validator, 
'PEAR_PackageFile_v2_Validator')) {
PEAR/Command/Remote.php:168:        if (!is_a($chan, 'PEAR_ChannelFile')) {
PEAR/Command/Pickle.php:151:        if (!is_a($pf2, 
'PEAR_PackageFile_v2')) {
PEAR/Command/Package.php:1081:        if (is_a($pf, 
'PEAR_PackageFile_v2')) {
PEAR.php:268:        if (!is_a($data, 'PEAR_Error')) {
Structures/Graph.php:104:        if (!is_a($newNode, 
'Structures_Graph_Node')) return 
Pear::raiseError('Structures_Graph::addNode received an object that is 
not a Structures_Graph_Node', STRUCTURES_GRAPH_ERROR_GENERIC);
Structures/Graph/Manipulator/AcyclicTest.php:128:        if 
(!is_a($graph, 'Structures_Graph')) return 
Pear::raiseError('Structures_Graph_Manipulator_AcyclicTest::isAcyclic 
received an object that is not a Structures_Graph', 
STRUCTURES_GRAPH_ERROR_GENERIC);
Structures/Graph/Manipulator/TopologicalSorter.php:133:        if 
(!is_a($graph, 'Structures_Graph')) return 
Pear::raiseError('Structures_Graph_Manipulator_TopologicalSorter::sort 
received an object that is not a Structures_Graph', 
STRUCTURES_GRAPH_ERROR_GENERIC);
Structures/Graph/Node.php:240:        if (!is_a($destinationNode, 
'Structures_Graph_Node')) return 
Pear::raiseError('Structures_Graph_Node::connectTo received an object 
that is not a Structures_Graph_Node', STRUCTURES_GRAPH_ERROR_GENERIC);
Translation2/Decorator.php:135:        } elseif 
(is_a($this->translation2, 'Translation2_Decorator')) {
Validate.php:886:                if (is_a($min, 'Date') &&
Validate.php:901:                if (is_a($max, 'Date') &&
XML/Spreadsheet/Writer.php:58:            if (is_a($cnode,'DomElement')) {
XML/Spreadsheet/Writer.php:77:        if 
(!is_a($this->worksheet,'PEAR_Error')) {
XML/Spreadsheet/Writer.php:255:            if (is_a($cnode,'DomText')) {
XML/RPC/Server.php:629:                    if (!is_a($r, 
'XML_RPC_Response')) {
XML/RPC.php:600:        return is_a($value, 'PEAR_Error');
XML/RPC.php:876:        if (!is_a($msg, 'XML_RPC_Message')) {