Event bus – what is it and how is it use? 116. What are the advantages and disadvantages of asynchronous calls? 117. Abstract class — what is it and why is it neee? 118. Is there a function to create a copy of a PHP array to another? 119. Explain the difference between exec(), system() and passthru()? 120. Maximum number of arguments allowe in a function in PHP? 121. Explain the difference between shell_exec() and exec() 122. and a PHP handler? 123. What exactly is the difference between array_map, array_walk and array_filter? 124 . What big changes has PHP undergone in the last few years.
Which is better for freeing memory
What is the difference between parameterize and non-parameterize functions? 126. Why do we use extract()? 127. What is the Null coalescing operator use for? 128 . Does PHP support method overloading? 129. Compare MySQLi and PDO. What are the pros and cons? 130. What is the difference between query(), PDO and execute()? 131. What is autoloading of classes in PHP? 132. When is it better to use require_once instead of require? 133. Is there Cambodia Phone Number List any reason to use strcmp() to compare strings? 134 . How would you create a Singleton class using PHP? 135 . How to check if a PHP array is associative? 136. What are the disadvantages of using a persistent connection in PDO? 137. Explain the exception hierarchy introduce.
How to measure execution time
What is the best way to combine two PHP objects? 139 . How to turn errors into exceptions in PHP? 140 . What is the yield statement in PHP? 141 . with PHP: unset() or var = null? 142 . Does PHP have threads? 143 . of PHP scripts? Databases 144 . Describe AERO Leads your experience with different types of databases (MySQL, PostgreSQL, MongoDB, etc.)? 145 . Have you worke on database design and normalization? What does the process of developing a new database schema look lik.
