Is_double

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

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

Is_float (PHP3, PHP4) is_float---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Determines whether the variable is floating-point syntax: int is_float (mixed Var); Description: This function is an alias for Is_double (). Reference: Is_double () ...

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 ...