php—Smarty-5 (22), phpsmarty-522
Continued from the previous article
11. section, sectionelse Section is a loop structure statement, mainly used to traverse arrays
Syntax:
{section name=name loop=loop array (number of times) start=start(0) step=step(1) max=maximum number of loops}
{sectionelse}
{/section}
Name: Name the section statement Required
Loop: Loop array required
Start: Start index Default value: 0
Step: step size Default value: 1
Max: Maximum number of loops Default value: Total length
The difference between Foreach and section:
Foreach refers to traversing an array directly
Section is a loop statement, and its number of loops is determined by the number of arrays
Section has more selectivity in traversing arrays
l section’s built-in variables
{$smarty.section.name.index} loop index
{$smarty.section.name.index_prev} Last loop index
{$smarty.section.name.index_next} Next cycle index
{$smarty.section.name.iteration} Loop index starts from 1
{$smarty.section.name.first|last} These two values are true for the first and last execution
{$smarty.section.name.total} Total number of loops
12. strip Remove consecutive spaces before and after
Syntax:
{strip}
…
{/strip}
2. Custom functions
1. assign Create template variables
{assign var="var" value="value"}
Var: Specify variable name
Value: Specify the variable value
2. counter counter
Syntax:
{counter start=0 skip=2 print=false}
Start: starting value
Skip: step size, default is 1
Print: Whether to output this time
3. cycle Realize rotation
Values: List of values to rotate
4. debug Open the debugging window
5. eval calculates the value of a variable
Syntax:
{eval var=#ErrorState# assign="state_error"}
Var: variable name to be calculated
Assign: Save the result, but do not output it this time
6. fetch reads the file content and outputs
{fetch file="file" assign="var"}
File: file name
Assign: The saved result will not be output this time
7. html_image In the page, print a picture
{html_image file="pumpkin.jpg"}
File: Image address
8. html_table Display array elements into a table (only applicable to simple arrays)
{html_table loop=$data cols=4 table_attr='border="0"'}
Loop: Array to be traversed Required
Cols: How many cells are displayed in each line. The default is three
Table_atr: table attribute
9. html_checkboxes Print a set of checkboxes
{html_checkboxes values=$cust_ids checked=$customer_id output=$cust_names separator="
"}
Values: array of values
Checked: Array of values of the selected items
Output: array of text
Separator: Separator The separation between each check item
Name: Name this group of checkboxes Note: smarty will automatically add [] to indicate an array
Template code:
Php code:

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In PHP, the characteristic of a do-while loop is to ensure that the loop body is executed at least once, and then decide whether to continue the loop based on the conditions. 1) It executes the loop body before conditional checking, suitable for scenarios where operations need to be performed at least once, such as user input verification and menu systems. 2) However, the syntax of the do-while loop can cause confusion among newbies and may add unnecessary performance overhead.

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