Is_bool

Is_bool (PHP4 >= 4.0b4) is_bool---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Determine if the variable is boolean syntax: int is_bool (mixed var) Description: Returns True if the argument Var is Boolean (Boolean). Reference: Is_array () & ...

Is_string (PHP3, PHP4) is_string---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Determines whether a variable is a string syntax: int is_string (mixed Var); Note: Returns true if the parameter Var is a string, or returns false. Reference: Is_bool (...)

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_long (PHP3, PHP4) is_long---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Determines whether the variable is an integer syntax: int is_long (mixed Var); Note: Returns true if the parameter var is an integer (long), otherwise it returns false. Reference: Is_bool () &nb ...

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 () ...

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 (...)

In PHP, you can judge numbers, characters, objects, arrays, and so on, including those functions such as see Is_bool (), Is_int (), Is_integer (), Is_float (), Is_real (), Is_object (), and Is_array (). I don't know how much you know. --//double-precision is_double is_double-is_float () alias Description This function is an alias function of Is_float (). &n ...

Is_object (PHP3, PHP4) is_object---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Determines whether the variable is an object syntax: int is_object (mixed Var); Note: If the parameter var is an object, returns True, otherwise it returns false. Reference: Is_bool () ...