To be popular, PHP uses the Trait keyword in order to solve a class that wants to integrate both the properties and methods of the base class, as well as other base classes, and trait is typically used in conjunction with use.
Let's take a look at
What is the usage and definition of PHP array_pop () function? The Array_pop () function is one of the PHP array functions, and his role is to delete the last element in the array (out of the stack). PS: Stack, aka stacks, is a linear table with
What is the function of PHP implode ()?
The implode () function in PHP returns a string composed of array elements that, contrary to the PHP explode () function, is the PHP explode () function that splits another string with one string and returns
The PHP strip_tags () function is one of the string functions that removes HTML, XML, and PHP tags from the string. Then return the string after removing the tag, this article collects a few articles about PHP strip_tags () function, hope to
In this article we describe what an abstract class is and how to use it.
What is an abstract class?
Abstract classes cannot be instantiated, and the same method is not implemented, just providing a method declaration, not a specific implementation.
First ensure that the window2003 SP2 system and IIS6, as well as download good PHP5 compression package and MYSQL5 version of the installation package configuration php:1. Unzip the php file into the Windows installation packing directory, for
Use the Mktime () function in PHP to convert a time into a Unix timestamp.
The Mktime () function returns the UNIX timestamp based on the parameters given. The timestamp is a long integer that contains the number of seconds from the Unix era
This article mainly introduces PHP to modify the array key name method, involving PHP for array traversal, interception, conversion and other related operations skills, the need for friends can refer to the following
This article describes how PHP
What is a PHP two-dimensional array?
A two-dimensional array, also known as a matrix, is essentially an array of array elements, an array of elements if it is a one-dimensional array, then we call this array a two-dimensional array.
PHP
Suppose you have an array:
What will the above code output? Above results you can try again locally.
We typically use Print_r to print an array (Var_dump is also possible, but not structurally clear)
BOOL Print_r (mixed $expression [, BOOL $return]
In PHP, the PHP fwrite () function is used to write to a file (which can be used safely in binary files). The simple point is that in a file, add new content, this article collects summed up a few about the PHP write file fwrite () function usage
Sort an array: the Usort () function uses a user-defined function to sort the array, with the instance code as follows: function cmp ($a, $b)//user-defined callback function {if ($a = = $b)//If two parameters are equal {return 0;//return 0} return ($
This article describes the use of string length interception in PHP. Share to everyone for reference, as follows: PHP provides a lot of use of functions, where the interception function of the string is no exception, and the function is very
Delete Cookies
When a cookie is created, its cookie file is automatically deleted when the browser is closed if it is not set to a valid time. If you want to delete the cookie file saved in the client before closing the browser, there are two ways
finding strings is the primary application of regular expressions. In PHP, the two functions that are available and used to match POSIX-style regular expressions are the Ereg () function and the eregi () function.
Ereg () function and eregi ()
Learning from the preceding series of PHP operators, today we learn the sixth operator of the PHP operator "
comparison Operators”。
What is the comparison operator used for?
Comparison operators you literally understand that it is used to compare,
PHP function fwrite--write file (can be used safely for binary files)
Description
int fwrite (resource handle, string string [, int length])
The PHP function fwrite writes the contents of a string to the file pointer handle. If length is specified,
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