Several ways of smarty accessing variables in PHP

$TPL =new Smarty ()//New Smarty object, I'm using the Smarty-3.1.6 version

1. Set Smarty template path $tpl->settemplatedir (); By default, templates

2. Set the Smarty template compilation Path $tpl->setcompiledir (); By default, Templates_c

3. Set the left and right delimiters of the Smarty template engine,

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$TPL->left_delimiter= "<{"; $TPL->right_delimiter= "}>"; By default: public $left _delimiter = "{";//smarty source code Public $right _delimiter = "}";//smarty source code

Why do we have to change these separators?

Because, for example, in an earlier version of the Smarty engine template, the error is not automatically recognized.

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For example: <style> div{margin:0;}                   </style> or JavaScript <script> function Show () {alert ("Smarty"); } </script>

In both cases, there are "left and right braces", and the Smarty engine encounters an error.

4. Initialization operation we can create a separate PHP file for initialization operations, such as: smarty.ini.php. And then include it in the PHP file.

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<?php                include ". /smarty3.1.6/libs/smarty.class.php ";               $tpl =new Smarty ();               $tpl->settemplatedir ("./ Tpl ");               $tpl->settemplatedir ("./ Compile ");                     $tpl->left_delimiter= "<{";               $tpl->right_delimiter= "} > ";

5. Using the Smarty template engine's display function or including other templates, you can smarty the template directory specified in the object (for example, the TPL directory, the default is the Templates directory) as the base directory.

① Template directory is: TPL, there are many templates in the directory, there are default,green,red templates, the default template directory has a lot of template files (INDEX.TPL, HEADER.TPL, FOOTER.TPL), the correct use of display at this time: $tpl->display ("Default/index.tpl"), that is, the default template directory under the base directory

② include other template files (such as: Header.tpl, FOOTER.TPL) in a template file (such as: INDEX.TPL), the appropriate notation for include should be: <{include "Default/header.tpl"}>, <{include "Default/footer.tpl"}>

Although Index.tpl, HEADER.TPL, Footer.tpl are all in the same directory, but <{include "Header.tpl"}>, <{include "Footer.tpl"}> is the wrong wording, In this case, the Smarty engine looks for headers and footer in the TPL directory, rather than under default.

6. If you want the PHP program in each directory to load Smarty and use Smarty to specify the template directory and compile the directory, the only way is to use the absolute path.

How to access a variable in the 7.Smarty template engine (remember the "$" symbol before the variable in the template)

① Access Array

Indexed arrays:

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$tpl->assign ("arr", Array ("AA", "BB", "CC")); $tpl->assign ("arr2", Array ("Two-dimensional array one by one", "two-dimensional array one or two"), Array ("Two-dimensional array 21", "two-dimensional array 22")); accessing indexed arrays: <{$arr [0]}>, <{$arr [0]}>, <{$arr [0]}> Accessing two-dimensional indexed arrays: <{$arr 2[0][0]}>, <{$arr 2[0][1]}>

Associative array: (using the. Symbols to access)

accessing associative arrays

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: <{$arr 3.id}>, <{$arr 3.name}>, <{$arr 3.age}>

② Access Objects

To create an object:

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Class human{ Private $sex; Private $name; Private $age; Public function __construct ($s, $n, $a) { $this->sex= $s; $this->name= $n; $this->age= $a; } Public Function Print_info () { return $this->sex. " --". $this->name." --". $this->age; } } $tpl->assign ("Student", New Human ("Male", "Marcofly", 22)); Assigning values to objects in a template: <{$student->print_info ()}>

Mathematical operations in the 8.Smarty template engine can be applied to template variables

Assigning values to variables

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$tpl->assign ("Num1", 10); $tpl->assign ("num2", 5.5);

Template variable Output

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<{$num 1 }>//Results <{$num 2}>//Results 5.5 <{$num 1+ $num 2}>//Results 15.5 <{$num 1+ $num 2* $num 2/$ num1}>//results 13.025