"PHP ==, ==="의 두 판 사이의 차이

2021년 4월 17일 (토) 20:59 기준 최신판

echo ( 0 ) ? "yes": "no";

echo ( 'abc' ) ? "yes" : "no";

echo ( 0 == 'abc' ) ? "yes" : "no";

echo ( '0' == 'abc' ) ? "yes" : "no";

echo ( 0 === 'abc' ) ? "yes" : "no";

echo ( '0' === 'abc' ) ? "yes" : "no";

@@ 2번째 줄: / 2번째 줄: @@
 ==예제 소스 코드==
-<source lang='php'>
+<syntaxhighlight lang='php' run>
-<?php
+echo ( 0 ) ? "yes": "no";
-echo "<h2>0</h2>";
+</syntaxhighlight>
-if(0) echo "true";
+<syntaxhighlight lang='php' run>
-else echo "false";
+echo ( 'abc' ) ? "yes" : "no";
+</syntaxhighlight>
-echo "<h2>'abc'</h2>";
+<syntaxhighlight lang='php' run>
-if('abc') echo "true";
+echo ( 0 == 'abc' ) ? "yes" : "no";
-else echo "false";
+</syntaxhighlight>
+<syntaxhighlight lang='php' run>
-echo "<h2>0 == 'abc'</h2>";
+echo ( '0' == 'abc' ) ? "yes" : "no";
-if(0 == 'abc') echo "true";
+</syntaxhighlight>
-else echo "false";
+<syntaxhighlight lang='php' run>
+echo ( 0 === 'abc' ) ? "yes" : "no";
-echo "<h2>'0' == 'abc'</h2>";
+</syntaxhighlight>
-if('0' == 'abc') echo "true";
+<syntaxhighlight lang='php' run>
-else echo "false";
+echo ( '0' === 'abc' ) ? "yes" : "no";
+</syntaxhighlight>
-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";
-</source>
-:→ http://zetawiki.com/ex/php/equalequal.php
-==실행 결과==
-<source lang='text'>
-false
-'abc'
-true
-== 'abc'
-true
-'0' == 'abc'
-false
-=== 'abc'
-false
-'0' === 'abc'
-false
-</source>
 ==같이 보기==
-*[[==]]
+* [[==]]
-*[[PHP 0, '', null, false 비교]]
+* [[PHP array_search()]]
+* [[PHP 0, '', null, false 비교]]
 ==참고==