Home >Backend Development >PHP Tutorial >PHP JSON error: Cannot use object of type stdClass as array solution, jsonstdclass_PHP tutorial
When PHP calls json_decode to generate a json object from a string object, if you use the [] operator to get data, you will get the following error:
Solution (2 types):
1. Use json_decode($d, true). Just set the second variable of json_decode to true.
2. json_decode($res) returns an object and cannot be accessed using $res['key']. Just replace it with $res->key.
Are you sure your mysql driver is included in the project?
1) Start the Tomcat server, open the browser, enter (where localhost is the name server or host),
enter the login page of the management interface, at this time please enter the user originally required during installation Name and password, log in to the management interface,
2) Select Resources-Data sources to enter the configuration data source interface, select
Data Source Actions-> Select Create New Data Source, enter the configuration details interface
The main content is as follows:
JNDI Name: ->jdbc/mysql
Data Source URL ->jdbc:mysql://localhost:3306/test
JDBC Driver Class-> org.gjt .mm.mysql.Driver
3) Modify the \conf\Catalina\localhost directory to create an xml file with the name of the web application you published. xml, (such as testpool.xml) open and add the following content:
type="javax.sql.DataSource"
password="123456"
driverClassName="org.gjt.mm.mysql.Driver"
maxIdle=" 2"
maxWait="50"
username="root"
url="jdbc:mysql://localhost:3306/test"
maxActive="4"/>
The content is the same as that in conf/server.xml
type="javax.sql.DataSource "
password="123456"
driverClassName="org.gjt.mm.mysql.Driver"
maxIdle="2"
maxWait="50"
username="root"
url="jdbc:mysql://localhost:3306/test"
maxActive="4"/>
Missing this step will result in an error: Cannot create JDBC driver of class '' for connect URL...the rest of the text >>
The json data format was not parsed