PHP Tutorials

/** * PHP to determine whether the device is a mobile phone or tablet method * @staticvar bool $is _mobile * @return bool */function wp_is_mobile () { static $is _mobile = null; if (Isset ($is _mobile)) { return $is _mobile; } if (Empty

PHP injection instance on the Internet it is difficult to see a complete article on the PHP injection and the use of code, so I have MySQL and PHP hard to chew for a few weeks, the following talk about my recess, I hope to give a chance! I believe

1. Function definition A named code that completes the specified task. 2. Format Function name (parameter 1, parameter 2, Parameter 3 ...) { function body return value } Do not write return value-procedure, write return value-function 3. Write the

With antdesign running on Nodejs, NPM start has an address: for example: localhost:8989. Using PHP, such as Port 80, this development is not easy to engage! Cross-domain is not good! I know there is a way to automatically build to any directory, but

This is the deletion of less than 123 in the array, I do the experiment, the result is not, how to change? While learning, side study, do not delete the elements of the array: $arr = Array (1, 2, 3713231987,3710001690,3713182016,3714441990,371323193

Can gulp have a plugin that outputs the TPL of the Smarty template to HTML? Development environment:An old project now to develop a new module, the previous development process is the front end to write the backend to .html .tpl use the Smarty

For example, we say get is idempotent and safe? Is this just a rule, we can also use the code to get a post (non-idempotent and non-secure) Reply content: For example, we say get is idempotent and safe? Is this just a rule, we can also use the

First, get () and post () Basic differences 1.get is to add the parameter data queue to the URL that the Action property of the submission form refers to, and the value corresponds to the field one by one in the form, which can be seen in the URL.

Array: Array( [0] => Array ( [id] => 1 [menu_collapse] => 超级菜单 [menu_items] => 写文章 [cid] => 1 ) [1] => Array ( [id] => 2 [menu_collapse] => 维护菜单

Seemingly simple things, in practical use, is still very interesting Arithmetic operators Operator name Result $a + $b addition $a and $b and $a-the difference between $b subtraction $a and $b $a * $b multiplication $a and the product of $b $a/$b

As time goes on, the list of data in the order table will be more and more, it will need to one months or a quarter or even nearly a year of data analysis statistics, such as the refund rate, payment rate, as well as the products associated with the

There are some requirements in peacetime, and in simple terms, you need to generate some images. Simple content can be processed by Photoshop, but similar to content with tables and so on, it's a waste of time to work with Photoshop every time.

I read 100,000 data from the database once, and then loop to do some calculations, the loop process, the variables involved will be overwritten by the next cycle, the situation is that the program has been running for a period of time, reported

By learning the language of PHP, you should know that it is a function-based HTML scripting language. The large library of functions supports the implementation of PHP language functions. Let's introduce the relevant usage of PHP function isset ()

The company uses Mantis to manage bugs, Mantis has a feature that exports bugs to Excel, But the current version of this mantis, in the export of Excel, "Summary, description, problem repro Step description, additional information, comments" and so

PHP generates a random password, easy and fast, can randomly generate a secure and reliable password, I hope this article will be helpful to everyone. PHP generates a secure random password program instance code as follows: Header

We provide three functions do not filter some special characters, mainly using PHP to filter out the SQL sensitive string, OK below to see this code bar, the need for friends to take a look, the example code is as follows: function Phpsql_show

Definition and Usage: the ABS () function returns the absolute value of a number. Syntax: ABS (x), the code is as follows: $abs =abs (-3.2); $abs =3.2 $abs 2=abs (5); $abs 2=5 $abs 3=abs (-5); $abs 3=5 Definition and Usage: the Ceil () function

function Ssubstr ($string, $length, $dot = ' ... ') {global $charset; if (strlen ($string) '), $ string); $strcut = "; if (Strtolower ($charset) = = ' Utf-8 ') {$n = $tn = $noc = 0; while ($n = $length) {break; }} if ($noc > $length)

In PHP to delete the function is more specific than JS, in addition to the trim () function, there are LTrim () and RTrim () function, they have to delete the left and right space, in addition to these three functions can also use regular