Smarty logical operator No. summary_php tutorial

Smarty logical operator number summary. I haven't used Smarty for a project for a long time. today, I suddenly want to modify some of my website's content, because my website was made a long time ago using the smarty template engine, I have not used Smarty for projects in some places for a long time. today, I suddenly want to modify some of my website's content, because my website was made using the smarty template engine a long time ago, I felt I had to search for the answer on the internet in some places. it seems that the long-lost smarty has been getting unfamiliar, so I have to study it quickly. Summarize the logical operator numbers of the Smarty template for future use.

Eq equal: equal
Neq not equal: not equal
Gt greater than: greater
Lt less than: less
Lte less than or equal: less than or equal
Gte great than or equal: greater than or equal
Is even: it is an even number.
Is odd: it is an odd number
Is not even: not an even number
Is not odd is not an odd number
Not: non
Mod: modulus remainder
P by: Yes... Division
& And: and
| Or: or
Is [not] can p by be divisible by a certain number, for example: {if $ smarty. get. age is p by 3}... {/if}
Is [not] Whether the even is an even number. for example, $ a is [not] even by $ B ($ a/$ B) % 2 = 0,
Is [not] is odd? for example: $ a is not odd by $ B ($ a/$ B) % 2! = 0

{If $ _ global_password} indicates that the variable does not exist ....

{If $ _ global_password! = ''} Is used to judge whether variables and so on are not equal to null ....

The if statement and if in Smarty must be paired with/if. you can use the else and elseif clauses.

The template uses eq, ne, neq, gt, lt, lte, le, gte, ge, is even, is odd, is not even, is not odd, not, mod, p by, even by, odd by, = ,! =,>, <, <=,> = Logical operator numbers must be left blank with variables or constants.

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