PHP

Definitions and usageThe Zip_entry_filesize () function returns a compressed archive entry for the original file size (before compression).Grammar Zip_entry_filesize (Zip_entry) Parameter descriptionZip_entry requirements.

Sixth chapter (2) The common traversal method of the arrayCount () in PHP, enter the header name of an array in this function, and how many pieces of data in this array will output a few digits. sizeof with the same function.The Foreach Loop

Flash as through the PHP tutorial to implement the database tutorial connection method 1. Configure the PHP environment 2. Start Flex Builder 3,new Flex project, named Project PHP, then select PHP in the server type, set the Web root (native Web

The following is a reference clip:1. Allow a method to give an error mark to the customer code2. Provide detailed information about program errors3. Let you determine multiple error conditions at the same time and separate your error report from the

According to the official explanation:1. $ GLOBALS ['var'] is an external global variable. The code is as follows:Copy code $ Var1 = 1;Function test (){Unset ($ GLOBALS ['var1']);}  Test ();Echo $ var1;?> 2. global $ var is an external

The code is as follows:Copy code // Instance: calculates the page runtime loading time// Analysis: get a time when the page is opened, and get a time when the load is complete. The running time is the difference between the two.// 1. User-defined

Object assignment and copying: value assignment: reload using the "=" operator The code is as follows:Copy code User a (10), B;B =;Copy: Call the copy constructor.User B;User a (B );OrUser a = B; // equivalent to User a (B ); The difference

User-defined functions are also called Udfs. They are not provided by PHP and are created by programmers. because you have created such functions, you can fully control these functions. therefore, a function can be run in the desired way.1. Declare

1. strstr-first appearance of the search stringString strstr (string $ haystack, mixed $ needle [, bool $ before_needle = false])Note 1: $ haystack is the string and $ needle is the string to be searched. This function is case sensitive.Note 2: The

Original String 1, 2, 3, 4, 5, 6,Remove the last character "," and the final result is 1, 2, 3, 4, 5, 6.The code is as follows: The code is as follows:Copy code $ Str = "1, 2, 3, 4, 5, 6 ,";$ Newstr = substr ($ str, 0, strlen ($ str)-1 );Echo $

Syntax:String strstr (string haystack, string needle)Returns the string starting from needle to ending in haystack.If no value is returned, that is, no needle is found, FALSE is returned. Note: This function is case sensitive.Instance 1 The code is

Super global variables in PHPFrom PHP 4.2.0, the default value of register_globals is off. As a result, many previous variables can be directly used, for example, $ PHP_SELF or the SESSION variable you set cannot be accessed in the form of "$

PHP is a weak language. When using the IN_ARRAY function, try to include the third parameter TRUEview sourceprint? 12 var_dump (in_array (0, array ('s', 'SS'), true); // return false3   4 var_dump (in_array (0, array ('s', 'SS'); // return true5   6

& This is a bitwise AND operator.& OperatorView and instance  $ A = 11;$ B = 7;Printf ("% B & % B = % B", $ a, $ B, $ a & $ B );// Output:// 1011 & 111 = 11// Check again & instanceIf (TRUE & TRUE)If (1 & 0 = 0)Print "TRUE! ";// TRUEOriginal

Explode (string separator, string [, int limit])Separator is a null string (""), and explode () returns FALSE. If the value of separator cannot be found in string, explode () returns an array containing a single string element. */// Explode instance

Array_values () // returns all elements in the arrayArray_walk () // use a custom function to traverse an array.Arsort (); // reserve the relationship between the values of the array subscript for inverted sortingAsort () // reserve the relationship

PHP session variables are used to store user session information or change settings. The Session variable contains about a single user information and is provided to all pages of an application.PHP session variablesWhen you work with the application,

Addcslashes-function adds a slash to 'and'DescriptionString addcslashes ($ str, string $ charlist)The parameters in the preceding and charlist are listed backslash character strings.Escape this string.CharlistCharacter escape list.If charlist

Ob_start () is to enable output buffering, that is, to buffer the input content.Ob_gzhandle uses gzip to process the content. As the ob_start parameter, it indicates the callback function used when the Buffered content is input. You can also define

Array_rand(PHP 4 and PHP 5)Array_rand-select an array of one or more random entriesDescriptionHybrid array_rand (array $ input [Abstract $ num_req = 1])Array_rand () is quite useful when you want to select an array of one or more random