Brief description of PHP entry-level interview questions (5)

PHP Junior Interview Questions are for programmers with little experience who are just looking for a job. This provides a lot of help for us to go out for interview, InterviewOfficial meetings often test us, and the interview questions played a big role at this time

41. Check whether a variable is set Is the function? The function that is empty is?

isset() empty()

42. The function that obtains the total number of query result sets is?

count()

43. $arr = array('james', 'tom', 'symfony'); Please print out the value of the first element

echo $arr[0];

44. Please separate the values ​​of the array in question 41 with ',' signs and merge them into string output

echo $arr[0].$arr[1].$arr[2]

46. $a = 'abcdef'; Please take out the value of $a and print out the first letter

echo $a{0};

##46. Can PHP be connected to databases such as sql server/oracle?

Yes

47. Please write the PHP5 permission control modifier

private // 私人的
protected // 保密的
public // 公开的

48 , please write the constructor and destructor of php5

__construct  // 构造函数
__destruct   // 析构函数

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Don’t be anxious after reading the above interview questions, there are other interview questions, basic things are best Consolidating them all will help us interview and find jobs.

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