Explain the difference between isset() and empty()?

186

What is scope of variable in php?

142

How can you declare a constant variable in php?

178

What the limitation of header() function in php?

156

What is static in php?

170

How to download file in php?

190

What language is similar to php?

163

What is overriding in php?

195

Tell me how to create a text file in php?

178

Is php 5 still supported?

157

Tell me how can we change the maximum size of the files to be uploaded?

195

How to delete an element from an array?

194

What are sql injections, how do you prevent them and what are the best practices?

163

Tell me how can we automatically escape incoming data?

175

Explain the importance of the function htmlentities.

185