In this article, we will see how to add JSON fields to our Django models. JSON is a simple format to store data in key and value format. It is written in curly braces. Many a time, on developer website, we need to add developer data and JSON fields are useful in such cases.First create a Django project and an app. Please do all the basic things, like adding app in INSTALLED_APPS and setting up urls, making a basic model and render its form in an HTML file.ExampleInstall the django-jsonfield package −pip install django-jsonfieldNow, let's create a model in models.py, ... Read More

We are going to make a Django admin fake login page using a thirdparty package. This will just create a Django admin fake page, and whenever anyone tries to login on the admin page, whether they enter the right or wrong password, they will not be able to login and their trial with their IP addresses will be stored in a table.So, just follow the steps given below and you will be all good to go.Setup basic urls and add app in INSTALLED_APPS in settings.py.ExampleFirst install the packagepip install django-admin-honeypotIn settings.py, add this −INSTALLED_APPS+ = ['admin_honeypot']We simply add it to ... Read More

Django toolbox is a debugging tool that is used to debug database queries, Django website loading speed, and many other things. Debug toolbar is very popular among developers and everyone is using it. So, let's dive into to see how to implement it.ExampleCreate an app with the name "myapp".First, install the django-debug-toolbar −pip install django-debug-toolbarNow, add 'debug_toolbar' to your INSTALLED_APPS in settings.py −INSTALLED_APPS = [    # ...    'debug_toolbar',    'myapp' ]This will add the debug toolbar as an app in our project.Next, in your middleware, add the following −MIDDLEWARE = [    # ...    'debug_toolbar.middleware.DebugToolbarMiddleware',    # ... Read More

In PHP, we can use the function mb_substitute_character() to get the substitution character. This function specifies the substitution character when the input character encoding is not valid or the character code does not exist in the output character encoding.Note: The invalid characters may be substituted with no output, string, or int value (Unicode character code value).Syntaxstring mb_substitute_character($char)ParametersThis function accepts only one parameter, $char.$char− It specifies the Unicode value as an integer or the strings given below:"none"− It will return no output."long"− It is used for the output character code value. For example, "U+3000, JIS+7E7E""entity"− it is used to return the output ... Read More

In PHP, multibyte string length (mb_strlen) function is used to get the total string length of a specified string. This function is supported in PHP 4.6.0 or higher versions.Syntaxint mb_strlen(str $string, str $encoding)Parametersmb_strlen() accepts two parameters: $string and $encoding.$string− It is used to check the string length$encoding− This parameter is used for character encoding. If it is omitted or null, then the internal character encoding value will be used.Return Valuesmb_strlen() returns the number of characters present in the given string. One is counted as a multi-byte character.Errors/ExceptionsIf the encoding is not known, then it will generate the level E_warning.Example Live DemoOutputTotal ... Read More

The mb_detect_order() function in PHP can be used to set/get the character encoding detection in an order. This function is supported in PHP 4.2.0 or higher versions.Syntaxarray|bool mb_detect_order(str $encoding)Parametersmb_detect_order() accepts only one parameter $encoding with string, array and bool.$encoding− This encoding parameter is an array or comma-separated list of character encoding. If it is omitted or null, then it returns the current character encoding detection order as an array.Return ValuesWhen setting the encoding detection order, it returns True on success or it returns False on failure.Example Live DemoOutputASCII, JIS, EUC-JPRead More

In PHP, we can use the function mb_strtolower() to change a given string into lower case. It returns strings with all alphabetic characters converted to lowercase characters.Syntaxstring mb_strtolower(str $string, str $encoding)Parametersmb_strtolower() accepts two parameters: $string and $encoding.$string− The string being lowercased, returns strings with all alphabetic characters converted to lowercase characters.$encoding− This parameter is the character encoding. If it is absent or null, then the internal character encoding value will be used.Return Valuesstring with all alphabetic characters converted to lowercase.Example Live DemoOutputIt will conver all the characters in the given string to its lower case.hello world! welcome to online tutorialsRead More

In PHP, mb_strtoupper() is an inbuilt function that is used to change a given string to upper case.Syntaxstring mb_strtoupper(str $string, str $encoding)Parametersmb_strtoupper() accepts two parameters: $string and $encoding.$string− The string being uppercased.$encoding− This parameter is the character encoding. If it is absent or null, then the internal character encoding value will be used.Return Valuesstring with all alphabetic characters converted to uppercase.Example Live DemoOutputIt will convert the given string to upper case.HELLO WORLD!, WELCOME TO ONLINE TUTORIALS

In PHP, we can use the function mb_substr_count() to count the total number of substrings in a given string.Syntaxint mb_substr_count(str $haystack, str $needle, str $encoding)Parametersmb_substr_count() accepts three parameters: $haystack, $needle and $encoding.$haystack− This parameter will check the string.$needle− This parameter will be used to tell that the substring is found from the given total string.$encoding− This parameter is the character encoding. If it is absent or null, then the internal character encoding value will be used.Return ValuesThis will return the number of times the needle substring occurs in the haystack string.Example Live DemoOutput2Read More

In PHP, mb_substr() is used to return the selected part of a given string. The multibyte safe substr() works based on the number of characters. It counts the position from the starting of the string. It will return 0 for the first character position and 1 for the second position character, and so on.Syntaxstring mb_substr(str $string, int $start, int $length, str $encoding)ParametersThis PHP function accepts four parameters: $string, $start, $length and $encoding.$string− This parameter is used to extract the substring from the given string.$string = mb_substr("Welcome to the online tutorials!", 5, 10, "UTF-8");$start− This parameter returns 0 for the first ... Read More