PHP > LIBRARY > isset, empty, is_nullÀÇ »ó°ü °ü°è¿Í Á¤º¸ ¿ä¾à / define(), defined() Â÷ÀÌ
 
PHP
Library
Tip&Tech
Q&A
 
PHP Function
phpschool
±×´©º¸µå
LIBRARY
  HOME > PHP > LIBRARY
 
isset, empty, is_nullÀÇ »ó°ü °ü°è¿Í Á¤º¸ ¿ä¾à / define(), defined() Â÷ÀÌ
ÀÛ¼ºÀÏ : 12-11-02
Á¶È¸ : 1,406  
   http://pokute.tistory.com/18 [487]

°ª

if($var)

isset

empty

is_null

$var1 =1

TRUE

TRUE

FALSE

FALSE

$var="";

FALSE

TRUE

TRUE

FALSE

$var="0";

FALSE

TRUE

TRUE

FALSE

$var=0;

FALSE

TRUE

TRUE

FALSE

$var=NULL;

FALSE

FALSE

TRUE

TRUE

$var

FALSE

FALSE

TRUE

TRUE

$var=array()

FALSE

TRUE

TRUE

FALSE

$var=array(1)

TRUE

TRUE

FALSE

FALSE



define()ÇÔ¼ö¿Í defined() Â÷ÀÌ´Â


define() ÇÔ¼ö´Â »ó¼ö¸¦ µî·ÏÇÏ´Â ÇÔ¼öÀÌ´Ù.

defined() ÇÔ¼ö´Â »ó¼ö°¡ µî·ÏµÇ¾î ÀÖ´ÂÁö¸¦ °Ë»çÇÏ´Â ÇÔ¼öÀÌ´Ù.


À¥ Ç÷§Æû ±¸Çö½Ã ¿ÜºÎ¿¡¼­ Á÷Á¢ urlÁÖ¼Ò¸¦ ÀÔ·ÂÇÏ¿© Á¢±ÙÇÏÁö ¸øÇϰÔ

º¸¾È ¸ÞÄ¿´ÏÁòÀ» ¸¸µé¼ö ÀÖ´Ù.


1.index ÆäÀÌÁö¸¦ ºóÆäÀÌÁö·Î ¸¸µé±â

2.defined()ÇÔ¼ö¸¦ ÀÌ¿ëÇÏ¿© °ªÀÌ Á¤ÀǵǾî ÀÖÀ»°æ¿ì¿¡¸¸ ÇØ´ç ÆäÀÌÁöÀÇ ³»¿ëÀ» ½ÇÇàÇϰÔÇÔ.


 
 

Total 77
¹øÈ£ Á¦   ¸ñ Á¶È¸
°øÁö php ¶óÀ̺귯¸® 144
77 ¸ÅÁ÷ÇØ½Ã(MAGIC HASHES) Ãë¾àÁ¡ 8
76 Trait 7
75    Trait 7
74 Overloading 7
73    Overloading 7
72 Type hinting/Type ¼³Á¤Çϱâ/Throw error 8
71    Type hinting/Type ¼³Á¤Çϱâ/Throw error 7
70    Type hinting/Type ¼³Á¤Çϱâ/Throw error 7
69 object clone 7
68    object clone 7
67 serialize / unserialize 7
66 spl_autoload_register(¿ÀÅä·Îµå) 7
65 window¿¡¼­ composer±ò±â 7
64 Exception/try/throw/catch 7
63 ErrorÀÇ Á¾·ù 7
62    ErrorÀÇ Á¾·ù 7
61    ErrorÀÇ Á¾·ù 7
60 eval 7
59 Magic_methods 7
58    Magic_methods 9
 1  2  3  4  
 
°³ÀÎȨÆäÀÌÁö ´ýº¡´åÄÄÀº ÇÁ·Î±×·¡¸Ó¿Í µðÀÚÀ̳ÊÀ§ÇÑ ITÄ¿¹Â´ÏƼ °ø°£ÀÔ´Ï´Ù.
Copyright ¨Ï www.dumbung.com. All rights reserved.