PHP ==, ===

PHP ==

1 예제 소스 코드

<?php
echo "<h2>0</h2>";
if(0) echo "true";
else echo "false";

echo "<h2>'abc'</h2>";
if('abc') echo "true";
else echo "false";

echo "<h2>0 == 'abc'</h2>";
if(0 == 'abc') echo "true";
else echo "false";

echo "<h2>'0' == 'abc'</h2>";
if('0' == 'abc') echo "true";
else echo "false";

echo "<h2>0 === 'abc'</h2>";
if(0 === 'abc') echo "true";
else echo "false";

echo "<h2>'0' === 'abc'</h2>";
if('0' === 'abc') echo "true";
else echo "false";

→ http://jmnote.com/php/equalequal.php

2 실행 결과

0
false

'abc'
true

0 == 'abc'
true

'0' == 'abc'
false

0 === 'abc'
false

'0' === 'abc'
false

3 같이 보기

• ==
• PHP 0, '', null, false 비교

4 참고 자료

• http://www.phpschool.com/gnuboard4/bbs/board.php?bo_table=talkbox2&wr_id=752957&sca=&sfl=wr_subject&stx=false&sop=and
• http://php.net/manual/en/types.comparisons.php