Get error when run cypher query multi line in php

2022-02-18 22:37 Mmmm imported from Stackoverflow

I get this error while that run this query cypher from luadis php driver Single line query runed but multi line query cypher doesn't run

$hosturl =  self::$config['hosturl'];
$result = $client->run("
            UNWIND range(0,4) as level
            CALL apoc.cypher.doIt('
            MATCH (c:Category { pagesFetched: false, level: $level })
            CALL apoc.load.json('$hosturl/w/api.php?format=json&action=query&list=categorymembers&cmtype=page&cmtitle=Category:' + apoc.text.urlencode(c.catName) + '&cmprop=ids|title&cmlimit=500')
            YIELD value as results
            UNWIND results.query.categorymembers AS page
            MERGE (p:Page {pageId: page.pageid})
            ON CREATE SET p.pageTitle = page.title, p.pageUrl = '$hosturl/wiki/' + apoc.text.urlencode(replace(page.title, ' ', '_'))
            WITH p,c
            MERGE (p)-[:IN_CATEGORY]->(c)
            WITH DISTINCT c
            SET c.pagesFetched = true', { level: level }) yield value
            return value");

And i get this error :

[Sat Feb 19 00:27:39 2022] PHP Fatal error:  Uncaught Bolt\error\MessageException: Invalid input 'h': expected whitespace, '.', node labels or rel types, '[', '^', '*', '/', '%', '+', '-', "=~", IN, STARTS, ENDS, CONTAINS, IS, '=', "<>", "!=", '<', '>', "<=", ">=", AND, XOR, OR, ',' or ')' (line 5,
column 25 (offset: 141))
"                       CALL apoc.load.json('https://en.wikipedia.org/w/api.php?format=json&action=query&list=categorymembers&cmtype=page&cmtitle=Category:' + apoc.text.urlencode(c.catName) + '&cmprop=ids|title&cmlimit=500')"
                         ^ (Neo.ClientError.Statement.SyntaxError) in C:\xampp\htdocs\Graph\vendor\stefanak-michal\bolt\src\protocol\V3.php:82
Stack trace:
#0 C:\xampp\htdocs\Graph\vendor\laudis\neo4j-php-client\src\Bolt\BoltUnmanagedTransaction.php(131): Bolt\protocol\V3->run()
#1 C:\xampp\htdocs\Graph\vendor\laudis\neo4j-php-client\src\Bolt\Session.php(87): Laudis\Neo4j\Bolt\BoltUnmanagedTransaction->runStatements()
#2 C:\xampp\htdocs\Graph\vendor\laudis\neo4j-php-client\src\Client.php(77): Laudis\Neo4j\Bolt\Session->runStatements in C:\xampp\htdocs\Graph\vendor\laudis\neo4j-php-client\src\Exception\Neo4jException.php on line 50
[Sat Feb 19 00:27:39 2022] [::1]:1194 [500]: GET /querycypher.php - Uncaught Bolt\error\MessageException: Invalid input 'h': expected whitespace, '.', node labels or rel types, '[', '^', '*', '/', '%', '+', '-', "=~", IN, STARTS, ENDS, CONTAINS, IS, '=', "<>", "!=", '<', '>', "<=", ">=", AND, XOR, O
R, ',' or ')' (line 5, column 25 (offset: 141))
"                       CALL apoc.load.json('https://en.wikipedia.org/w/api.php?format=json&action=query&list=categorymembers&cmtype=page&cmtitle=Category:' + apoc.text.urlencode(c.catName) + '&cmprop=ids|title&cmlimit=500')"
                         ^ (Neo.ClientError.Statement.SyntaxError) in C:\xampp\htdocs\Graph\vendor\stefanak-michal\bolt\src\protocol\V3.php:82
Stack trace:
#0 C:\xampp\htdocs\Graph\vendor\laudis\neo4j-php-client\src\Bolt\BoltUnmanagedTransaction.php(131): Bolt\protocol\V3->run()
#1 C:\xampp\htdocs\Graph\vendor\laudis\neo4j-php-client\src\Bolt\Session.php(87): Laudis\Neo4j\Bolt\BoltUnmanagedTransaction->runStatements()
#2 C:\xampp\htdocs\Graph\vendor\laudis\neo4j-php-client\src\Client.php(77): Laudis\Neo4j\Bolt\Session->runStatements in C:\xampp\htdocs\Graph\vendor\laudis\neo4j-php-client\src\Exception\Neo4jException.php on line 50
[Sat Feb 19 00:27:39 2022] [::1]:1194 Closing

Please say to me how to solve this Please help me

1 answer

answered 2022-02-21 14:07 Ghlen

I don't really understand the usage of the apoc call. You can just inline the query like this:

$result = $client->run(<<<'CYPHER'
            UNWIND range(0,4) as level
            MATCH (c:Category { pagesFetched: false, level: level })
            CALL apoc.load.json($hostUrl + '/w/api.php?format=json&action=query&list=categorymembers&cmtype=page&cmtitle=Category:' + apoc.text.urlencode(c.catName) + '&cmprop=ids|title&cmlimit=500')
            YIELD value as results
            UNWIND results.query.categorymembers AS page
            MERGE (p:Page {pageId: page.pageid})
            ON CREATE SET p.pageTitle = page.title, p.pageUrl = '$hosturl/wiki/' + apoc.text.urlencode(replace(page.title, ' ', '_'))
            WITH p,c
            MERGE (p)-[:IN_CATEGORY]->(c)
            WITH DISTINCT c
            SET c.pagesFetched = true
            CYPHER, ['hostUrl' => $hostUrl]);

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C:\xampp\htdocs\licenta\vendor\php-http\client-common\src\Plugin\ErrorPlugin.php(55): Http\Client\Promise\HttpFulfilledPromise->then(Object(Closure)) #3
C:\xampp\htdocs\licenta\vendor\php-http\client-common\src\PluginClient.php(161): Http\Client\Common\Plugin\ErrorPlugin->handleRequest(Object(GuzzleHttp\Psr7\Request), Object(Closure), Object(Closure)) #4
C:\xampp\htdocs\licenta\vendor\php-http\client-common\s in C:\xampp\htdocs\licenta\vendor\php-http\client-common\src\Plugin\ErrorPlugin.php on line 72

I really can't wrap my head around it, any help is greatly appreciated. Thanks in advance!

Store session details in database laravel-neo4j
Hello everyone,

I am new to neo4j. I have built a test app. It is a simple laravel-neo4j user login and register app. Everything works fine. But I want to store the session details in the database, not in the file. So I have tried this method and got the Undefined offset: 0 error. So please help me. I have given the link for docker and commands to run it. Please run this and help me to solve this problem. Right now the session is storing in the file. First, register an account then use that account for login. Thank you.

docker: https://drive.google.com/file/d/1q0Cd6QwaVnqyoWeUOHWnodWNCL24MBrj/view?usp=sharing

Command to run docker file
```
./docker_compose.sh build
./docker_compose.sh up
```
URLs

Front-end: http://0.0.0.0:8081/

Login: http://0.0.0.0:8081/login

Register: http://0.0.0.0:8081/register

Neo4j: http://0.0.0.0:8083/browser/

Login credentials for neo4j:
```
Username: neo4j
Password: root
```

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