Variable Syntax

In the previous chapter we learned how to assign a variable to a template variable through the Assign method, which we'll look at in detail how to use the label output template variable in a template. Note that this article is only intended for use with the internal template engine, and if you use a smarty or other template engine, refer to its associated variable output syntax. Variable output variable output method is very simple, for example, in the controller we give the template variable: $http://www.aliyun.com/zixun/aggregation/116 ...

Empty (unknown) empty---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Determine whether the variable set syntax: int empty (mixed Var); Note: If the variable exists and has a set variable value return FALSE, otherwise return true. Example: <?php &nb ...

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Print_r (PHP4) print_r---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; List variable information syntax: void Print_r (mixed expression); Description: This function lists the variable information that people can read (human-readable), if the given value is a string, an integer, or a floating-point number ...

Settype (PHP3, PHP4) settype---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Type syntax for the SET variable: int Settype (string var, string type); Note: The form of the set variable var is type, and the parameter type has the following possible values: "...

Unset (unknown) unset---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Delete variable syntax: int unset (mixed Var); Description: unset () deletes the specified variable and returns TRUE. Example: <?php unset (...)

Is_array (PHP3, PHP4) is_array---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Determines whether the variable is an array syntax: int is_array (mixed Var); Note: Returns true if the parameter var is an array, or returns FALSE. Reference: Is_double () & ...

Is_double (PHP3, PHP4) is_double---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Determine whether the variable is floating-point number syntax: int is_double (mixed Var); Note: If the parameter var is a floating-point number, it returns TRUE, otherwise it returns false. Reference: Is_arr ...

Is_integer (PHP3, PHP4) is_integer---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Determines whether the variable is an integer syntax: int is_integer (mixed Var); Description: This function is an alias for Is_long (). Reference: Is_bool () ...