Shulou(Shulou.com)06/02 Report--

Today, I would like to talk to you about the use of smarty tutorials and matters needing attention, many people may not know much about it. In order to make you understand better, the editor has summarized the following for you. I hope you can get something according to this article.

MVC is a development mode that emphasizes that the input, processing and display of data are forcibly separated.

Smarty usage tutorial

1. How to configure our smarty

After decompressing, put the libs folder in the first level directory of the website, and then create two folders.

Templates stores template files

Templates_c stores compiled files

Then create the initialization file smarty.ini.php

Note:

1. The identification delimiter of the replacement variable is generally used

Two ways to change the delimiter:

1. Change the source code: Smarty.class.php $left_delimiter is not recommended

two。 Dynamic modification:

$Smarty- > left_delimiter= ""

Write before display

2.smarty allocation data

$smarty- > assign ("Address", $address)

Used to assign values to the template. You can specify a pair of names / values, or you can specify an associative array that contains names / values.

$smarty- > assign ("aa", true); / / output 1

$smarty- > assign ("aa", false); / / output empty

Note:

Allocation of two-dimensional associative arrays

Allocation name of the object} >

Master- > name} > exposed by the properties of the object

Extract data from configuration files, common configuration styles, etc.

Load the configuration file first

The data in the configuration file can be used directly in the template file

The built-in function foreach of 3.smarty template

One-dimensional array loop fetch

=

Two-dimensional indexed array loop fetch

Two-dimensional associative array loop fetch

=

4. Custom function

Function test ($args) {

$str= ""

For ($iTun0witteri ". $args ['con']."

}

Return $str

}

/ / the function needs to be registered

$smarty- > register_function ("self", "test")

Calling form

Custom function (block registration mode)

Function test2 ($args,$con) {

$str= ""

For ($iTuno con. ".

}

Return $str

}

/ / register block functions

$smarty- > register_block ("block", "test2")

Calling form

Hello

Add custom functions in the form of plug-ins (placed in the libs/plugins folder)

Must follow the file name format: function. Custom function name. php

Function name format:

Function smarty_function_ custom function name ($params,&$smarty) {

$str= ""

For ($iTun0witteri ". $args ['con']."

}

Return $str

}

/ / No registration is required

Add custom block functions in the form of plug-ins

Must follow the file name format: function. Custom function block name .php

Function name format:

Function smarty_block_ Custom function Block name ($params,$con,&$smarty) {

$str= ""

For ($iTuno con. ".

}

Return $str

}

/ / No registration is required

Basic syntax of 5.smarty

Use comments in a template

Call a function in a template file

The referenced variables can be mathematically operated in the template file, but the operation order cannot be changed with ().

Assign a constant and take out

Define ("RATE", "0.08")

Use a variable regulator in a template

Basic usage

The variable regulator can be customized and given in the form of a plug-in

File name: modifier. Variable name. php

Function smarty_modifier_XXX () {

/ / Code

}

/ / A new variable regulator requires the first letter of a sentence to be uppercase and lowercase.

File name: modifier. Variable name. php

Function smarty_modifier_mycapitalize () {

Return strtoupper (substr ($string,0,1)) .strtolower (substr ($string,1))

}

Commonly used variable operators

Date_formate time format

Escape transcoding

Replace the nl2br newline character with

Regex_replace regular substitution

String_formate string formatting

Truncate interception

Other built-in functions of 6.samrty

Capture capture

Config_load loads variables from the configuration file

Include contains other templates in the current template

Insert is similar to include, but the content it contains is not cached

If elseif else

Ldelim rdelim left and right boundary character

Count count

Data in literal tags are treated as text

Php

Section sectionelse

7. Custom function

Counter keeps the current value of each count. Users can adjust this value by adjusting interval and direction. You can also decide whether to output the value. If you need to run multiple counters at the same time, you must specify different names for them. If no name is specified, the template engine uses "default" as the default.

Cycle

Use a set of values for rotation. This feature makes it easy to alternately output colors in a table or rotate values in an array.

Html_checkboxes

Creates a check button group based on the given data. This function can specify which elements are selected. Either the values and ouput properties must be specified, or the options override must be specified. All outputs are compatible with XHTML.

Html_options

Create an option group based on the given data. This function can specify which elements are selected. Either the values and ouput properties must be specified, or the options override must be specified.

Html_radios

Creates a radio button group based on the given data. This function specifies which element is selected. Either the values and ouput properties must be specified, or the options override must be specified. All outputs are compatible with XHTML.

Html_select_date

Used to create the date drop-down menu, you can display any year, month and day.

Html_select_time

Used to create time drop-down menu

Mailto

Used to create date drop-down menu

Popup-init,popup

Popup is used to create javascript pop-up windows. Need to be mapped into overLib.js

Textformat

Used to format text

8. Variables (focus on)

$config_dir

$template_dir

$compile_dir

$plugins_dir

$caching

$cache_dir

$cache_lifetime

$debugging starts the debugging console

Caching Mechanism of 9.smarty

The default is that when the template file is changed, the controller will judge

1. Whether the template compilation file exists

two。 Is the template file change time greater than the compilation file change time?

The compiled file will only be regenerated when the result is true, thus re-rendering the page.

Disadvantages:

1. The generated compilation file is a PHP dynamic data file, which affects the browser's reading performance.

two。 When the controller file changes, the compiled file is not regenerated

After modification:

1. The generated compilation file is a HTML static data file, which is convenient for browsers to read.

two。 When the controller file changes, the cache_lifetime is set to control the regeneration of the compiled file.

Local caching technology

A template file is partially cached and partly updated in real time.

The insert function is not cached by default

/ / generate different cache pages according to the ID number

$smarty- > display ('template file', cache ID)

$smarty- > clear_all_cache (int expire time); / / clear all caches

As an optional parameter "expire time", you can specify a minimum time in seconds, after which all caches will be cleared.

$smarty- > clear_cache ('template file', cache ID); / / clear the cache file of the specified id

The process of passing append by value and having a copy

Append_by_ref reference add

Assign is passed by value by default

Assign_by_ref is reference passing

10.smarty filter

Prefilters pre-filter

Run before the controller reads the template file, and the function is encapsulated in the display function

It is used to delete unwanted content and monitor operations on the template

Filter after Postfilters can be used to add comment version number.

Run before the controller outputs the compiled file

Outputfilters output filter

Execute the compiled file before it is read by the browser

After reading the above, do you have any further understanding of the tutorials and precautions for using smarty? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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