Question:What is the functionality of the function strstr and stristr?
strstr: It returns the remainder of a string beginning with the first occurrence of a predefined string.
stristr: same as strstr except the search of for the pattern is case insensitive.
Question:How can we automatically escape incoming data?
We have to enable the Magic quotes entry in the configuration file of PHP.
Question:What is the difference between ereg_replace() and eregi_replace()?
ereg_replace(): it is used to find and replace a pattern with a replacement string.
eregi_replace(): same as ereg_replace() except the search of for the pattern is case insensitive.
Question:What is property overloading?
Property overloading continues to protect properties by forcing access and manipulation through public methods, yet allowing the data to be accessed as if it were a public property.
Question:What are the different functions in sorting an array?Discuss them?
sort(): sort array in ascending order.
rsort():sort array in descending order.
asort() : Sort array in ascending order with key/value.
arsort(): reverse of assort.
natsort (): sorting the in order we expect.
natcasesort(): case insensitive natsort.
ksort(): sorts an array by its keys.
krsort(): reverse of ksort
Usort(): sorting an array by using user defined comparison algorithm