各大公司的PHP面试题（国外英文资料）.docVIP

各大公司的PHP面试题（国外英文资料） The update table name set Date = GETDATE () where UserName = zhang3 (c) please write down all the records that are named chang 4 Delete from indicates where UserName = open four 43, please write the meaning of the data type (int char varchar datetime text). What is the difference between varchar and char Char stores fixed-length Varchar stored longer Datetime time Text storage gets longer Varchar is longer Char (20) fixed length The mysq-type (usually the table ID field) must be set to (?) Field (1) auto_increment Write the output of the following program (1) $b = 201; C = $40; $a = $b $c? 4:5; Echo $a; ? 4 Is there a function that checks whether a variable has been set? Is it an empty function? (2) isset () -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- What is the function of the total number of query result sets? (1) The mysql_num_rows () 48, $arr = array ( James, Tom, symfony); Please print out the value of the first element (1) Print_r ($arr [0]); Reset ($arr); Print_r (current ($arr)); Print_r (array_shift ($arr)); 49, please use the value of the array of 41, dividing and merging into the string output (1 point) the implode 50, $a = abcdef; Please take the value of $a and print out the first letter (1 point) $a [0]; Substr ($a, 0, 1); Can PHP be connected to a database like SQL server/oracle? (1) can be Have an existing library Write the PHP5 permission control modifier (3) publicprivate protected Write php5s constructors and destructors (2) Public function __construct () {} Public function __destruct () {} Programming problem Write a function that, as efficiently as possible, takes the extension of the file from a standard url For example: /abc/de/fg.php? The id = 1 will require either PHP or.php ? PHP $url = /abc/de/fg.php?id=1; $arr = parse_url ($url); P