Ttdfjt

I created a custom router

this is my di.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
/**
 * Copyright © 2016 Magento. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
 <type name="MagentoFrameworkAppRouterList">
 <arguments>
 <argument name="routerList" xsi:type="array">
 <item name="default" xsi:type="array">
 <item name="class" xsi:type="string">VendorCustomControllerRouter</item>
 <item name="disable" xsi:type="boolean">false</item>
 <item name="sortOrder" xsi:type="string">40</item>
 </item>
 </argument>
 </arguments>
 </type>
</config>

This is the block match function:

public function match(MagentoFrameworkAppRequestInterface $request) 
 $identifier = trim($request->getPathInfo(), '/');

 if(strpos($identifier, 'search') !== false) 

 $request->setModuleName('catalogsearch')->setControllerName('result')->setActionName('index');
 else 
 //There is no match
 return;
 

 /*
 * We have match and now we will forward action
 */
 return $this->actionFactory->create(
 'MagentoFrameworkAppActionForward', ['request' => $request]
 );
 

Everything is fine till I got an error "Front controller reached 100 router match iterations" everytime I go to a 404 page.

try compile and flush cache

bin/magento setup:di:compile
 bin/magento cache:flush

Set return null in your else condition :

public function match(MagentoFrameworkAppRequestInterface $request) 
 $identifier = trim($request->getPathInfo(), '/');

 if(strpos($identifier, 'search') !== false) 

 $request->setModuleName('catalogsearch')->setControllerName('result')->setActionName('index');
 else 
 //There is no match
 return null;
 

 /*
 * We have match and now we will forward action
 */
 return $this->actionFactory->create(
 'MagentoFrameworkAppActionForward', ['request' => $request]
 );