php

Regular Expression Validation Example in PHP

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While validating a field we have to use regular expressions and I have explained how to validate html input field with regular expression via PHP.

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php

Format a PHP date for a given format

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You will need some formatting for php date strings when you echo them or populating to db and other functions as well. You can first convert that accurate string to DateTime field […]

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php

Create random number in php

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Random numbers are essential while you are doing some unique or reference based functions. You will need variables to set with some random values. Try below code for that. $refNumber = mt_rand(99999999,999999999); […]

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Java

Abstract Class and Abstract methods in Java 01

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Abstract class is also a class which is declared as abstract and this cannot be instantiated like normal java class even though it can be sub classed.

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Java

Default method in interface in java – part 1

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This default method comes to scene when developers need to update existing interface without updating that interface implement classes updating. Default methods must have to have an implementation.  And developer can update […]

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Java

Interfaces in Java – Part 2

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When you define an interface if you make interface public then any class can access it and if you did not use word of public then it will only accessible to classes […]

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