php模板引擎smarty的变量操作符

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indent(缩进)
Parameter Position Type Required Default Description
1 integer No 4 This determines how many characters to indent to.
2 string No (one space) This is the character used to indent with.

在每行缩进字符串,默认是4个字符(pear标准也是).
作为可选参数,你可以指定缩进字符数.
作为第二个可选参数,你可以指定缩进用什么字符代替
index.php:

 

$smarty = new Smarty;

$smarty->assign('articleTitle', 'NJ judge to rule on nude beach.');

$smarty->display('index.tpl');

 

index.tpl:

 

{$articleTitle}

 

{$articleTitle|indent}

 

{$articleTitle|indent:10}

 

{$articleTitle|indent:1:"t"}

 

OUTPUT:

 

NJ judge to rule on nude beach.

Sun or rain expected today, dark tonight.

Statistics show that teen pregnancy drops off significantly after 25.

 

NJ judge to rule on nude beach.

Sun or rain expected today, dark tonight.

Statistics show that teen pregnancy drops off significantly after 25.

NJ judge to rule on nude beach.

Sun or rain expected today, dark tonight.

Statistics show that teen pregnancy drops off significantly after 25.

 

NJ judge to rule on nude beach.

Sun or rain expected today, dark tonight.

Statistics show that teen pregnancy drops off significantly after 25.

lower(小写)
将变量字符串小写
index.php:

$smarty = new Smarty;

$smarty->assign('articleTitle', 'Two Convicts Evade Noose, Jury Hung.');

$smarty->display('index.tpl');

index.tpl:

{$articleTitle}

{$articleTitle|lower}

OUTPUT:

Two Convicts Evade Noose, Jury Hung.

two convicts evade noose, jury hung.

nl2br(换行符替换成
)
所有的换行符将被替换成
.同php的nl2br()函数一样.
index.php:

$smarty = new Smarty;

$smarty->assign('articleTitle', "Sun or rain expectedntoday, dark tonight");

$smarty->display('index.tpl');

index.tpl:

{$articleTitle|nl2br}

OUTPUT:

Sun or rain expected
today, dark tonight

regex_replace(正则替换)
寻找和替换正则表达式 .
Parameter Position Type Required Default Description
1 string Yes n/a This is the regular expression to be replaced.
替换正则表达式.
 
2 string Yes n/a This is the string of text to replace with.
使用什么文本字串来替换

index.php:

$smarty = new Smarty;

$smarty->assign('articleTitle', "Infertility unlikely tonbe passed on, experts say.");

$smarty->display('index.tpl');

index.tpl:

{* replace each carriage return, tab & new line with a space *}{* 使用空格替换每个回车,tab,和换行符 *}

{$articleTitle}

{$articleTitle|regex_replace:"/[rtn]/":" "}

OUTPUT:

Infertility unlikely to

be passed on, experts say.

Infertility unlikely to be passed on, experts say.

replace(替换)
简单的搜索和替换字符串
Parameter Position Type Required Default Description
1 string Yes n/a This is the string of text to be replaced.
将被替换的字符串
2 string Yes n/a This is the string of text to replace with.
用来替换的文本 

index.php:

$smarty = new Smarty;

$smarty->assign('articleTitle', "Child's Stool Great for Use in Garden.");

$smarty->display('index.tpl');

index.tpl:

{$articleTitle}

{$articleTitle|replace:"Garden":"Vineyard"}

{$articleTitle|replace:" ":" "}

OUTPUT:

Child's Stool Great for Use in Garden.

Child's Stool Great for Use in Vineyard.

Child's Stool Great for Use in Garden.

spacify
是一种在字符串的每个字符之间插入空格或者插入其他的字符(串).
index.php:

$smarty = new Smarty;

$smarty->assign('articleTitle', 'Something Went Wrong in Jet Crash, Experts Say.');

$smarty->display('index.tpl');

index.tpl:

{$articleTitle}

{$articleTitle|spacify}

{$articleTitle|spacify:"^^"}

OUTPUT:

Something Went Wrong in Jet Crash, Experts Say.

S o m e t h i n g W e n t W r o n g i n J e t C r a s h , E x p e r t s S a y .

S^^o^^m^^e^^t^^h^^i^^n^^g^^ ^^W^^e^^n^^t^^ ^^W^^r^^o^^n^^g^^ ^^i^^n^^ ^^J^^e^^t^^ ^^C^^r^^a^^s^^h^^,^^ ^^E^^x^^p^^e^^r^^t^^s^^ ^^S^^a^^y^^.

string_format(字符串格式化)
Parameter Position Type Required Default Description
1 string Yes n/a This is what format to use. (sprintf)
使用的格式化方式

是一种格式化浮点数的方法.例如十进制数.使用sprintf语法格式化

index.php:

$smarty = new Smarty;

$smarty->assign('number', 23.5787446);

$smarty->display('index.tpl');

index.tpl:

{$number}

{$number|string_format:"%.2f"}

{$number|string_format:"%d"}

OUTPUT:

23.5787446

23.58

24

strip(去除(多余空格)
替换所有重复的空格,换行和tab为单个.
index.php:

$smarty = new Smarty;

$smarty->assign('articleTitle', "Grandmother ofneight makest hole in one.");

$smarty->display('index.tpl');

index.tpl:

{$articleTitle}

{$articleTitle|strip}

{$articleTitle|strip:" "}

OUTPUT:

Grandmother of

eight makes hole in one.

Grandmother of eight makes hole in one.

Grandmother of eight makes hole in one.

strip_tags(去除html标签)
去除在<和>之间的所有标签,包括<和>.
index.php:

$smarty = new Smarty;

$smarty->assign('articleTitle', "Blind Woman Gets New Kidney from Dad she Hasn't Seen in years.");

$smarty->display('index.tpl');

index.tpl:

{$articleTitle}

{$articleTitle|strip_tags}

OUTPUT:

Blind Woman Gets New Kidney from Dad she Hasn't Seen in years.

Blind Woman Gets New Kidney from Dad she Hasn't Seen in years.

truncate(截取)
Parameter Position Type Required Default Description
1 integer No 80 This determines how many characters to truncate to.
指定截取多少字符
2 string No ... This is the text to append if truncation occurs.
截取后加在截取词后的字符串 
3 boolean No false This determines whether or not to truncate at a word boundary (false), or at the exact character (true).
检查是否截取到词的边界 

截取字符串开始的一段.默认是80个.
你可以指定第二个参数作为在截取的那段字符串后加上什么字符.
默认情况下,smarty会截取到一个词的末尾,
如果你想要精确的截取多少个字符,把第三个参数改为"true"

index.php:

$smarty = new Smarty;

$smarty->assign('articleTitle', 'Two Sisters Reunite after Eighteen Years at Checkout Counter.');

$smarty->display('index.tpl');

index.tpl:

{$articleTitle}

{$articleTitle|truncate}

{$articleTitle|truncate:30}

{$articleTitle|truncate:30:""}

{$articleTitle|truncate:30:"---"}

{$articleTitle|truncate:30:"":true}

{$articleTitle|truncate:30:"...":true}

OUTPUT:

Two Sisters Reunite after Eighteen Years at Checkout Counter.

Two Sisters Reunite after Eighteen Years at Checkout Counter.

Two Sisters Reunite after...

Two Sisters Reunite after

Two Sisters Reunite after---

Two Sisters Reunite after Eigh

Two Sisters Reunite after E...

upper(大写 )
将变量改为大写
index.php:

$smarty = new Smarty;

$smarty->assign('articleTitle', "If Strike isn't Settled Quickly it may Last a While.");

$smarty->display('index.tpl');

index.tpl:

{$articleTitle}

{$articleTitle|upper}

OUTPUT:

If Strike isn't Settled Quickly it may Last a While.

IF STRIKE ISN'T SETTLED QUICKLY IT MAY LAST A WHILE.

wordwrap(行宽约束)
可以指定段落的宽度(也就是多少个字符一行,超过这个字符数换行).默认80.
第二个参数可选,可以指定在约束点使用什么字符(默认是换行符n).
默认情况下smarty将截取到词尾,你也可以指定精确截取多少个字符
Parameter Position Type Required Default Description
1 integer No 80 This determines how many columns to wrap to.
指 定段落(句子)的宽度 
2 string No n This is the string used to wrap words with.
使用什么字符约束 
3 boolean No false This determines whether or not to wrap at a word boundary (false), or at the exact character (true).
是否精确约束到字符

index.php:
$smarty = new Smarty;
$smarty->assign('articleTitle', "Blind woman gets new kidney from dad she hasn't seen in years.");
$smarty->display('index.tpl');
index.tpl:
{$articleTitle}
{$articleTitle|wordwrap:30}
{$articleTitle|wordwrap:20}
{$articleTitle|wordwrap:30:"
n"}
{$articleTitle|wordwrap:30:"n":true}
OUTPUT:
Blind woman gets new kidney from dad she hasn't seen in years.
Blind woman gets new kidney
from dad she hasn't seen in
years.
Blind woman gets new
kidney from dad she
hasn't seen in
years.
Blind woman gets new kidney

from dad she hasn't seen in years.
Blind woman gets new kidney fr
om dad she hasn't seen in year
s.

组合使用多个操作符
可以在一个变量上应用操作符,它们将从左到右依次组合应用.多个操作符必须用"|"符号分开.
index.php:
 
$smarty = new Smarty;
$smarty->assign('articleTitle', 'Smokers are Productive, but Death Cuts Efficiency.');
$smarty->display('index.tpl');
 
index.tpl:
{$articleTitle}
{$articleTitle|upper|spacify}
{$articleTitle|lower|spacify|truncate}
{$articleTitle|lower|truncate:30|spacify}
{$articleTitle|lower|spacify|truncate:30:". . ."}
 
 
OUTPUT:
 
Smokers are Productive, but Death Cuts Efficiency.
S M O K E R S A R E P R O D U C T I V E , B U T D E A T H C U T S E F F I C I E N C Y .
s m o k e r s a r e p r o d u c t i v e , b u t d e a t h c u t s...
s m o k e r s a r e p r o d u c t i v e , b u t . . .
s m o k e r s a r e p. . .