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array search — ÁÖ¾îÁø °ªÀ¸·Î ¹è¿­À» °Ë»öÇÏ¿© ¼º°ø½Ã ÇØ´çÇÏ´Â Å°¸¦ ¹Ýȯ
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mixed array_search ( mixed $needle , array $haystack [, bool $strict ] )

¨ç needle ÀÌ ¹®ÀÚ¿­À̸é, ´ë¼Ò¹®ÀÚ¸¦ ±¸ºÐÇÏ¿© ºñ±³ÇÕ´Ï´Ù.

¨è ¹è¿­¿¡¼­ needle À» ãÀ¸¸é Å°¸¦ ¹ÝȯÇÏ°í, ¾Æ´Ï¸é FALSE¸¦ ¹ÝȯÇÕ´Ï´Ù.

¨é haystack ¿¡¼­ needle À» µÎ ¹ø ÀÌ»ó ¹ß°ßÇϸé, óÀ½ ¸ÅÄ¡ÇÑ Å°¸¦ ¹ÝȯÇÕ´Ï´Ù.

¨ê ¸ÅÄ¡ÇÏ´Â ¸ðµç °ª¿¡ ´ëÇØ Å°¸¦ ¹Ýȯ¹ÞÀ¸·Á¸é, array_keys()¿¡ ¼±ÅÃÀûÀÎ search_value Àμö¸¦ »ç¿ëÇϽʽÿÀ.

¨ë ¼¼¹ø° Àμö strict ¸¦ TRUE·Î ¼³Á¤Çϸé, array_search() ÇÔ¼ö´Â haystack ¿¡¼­ needle ÀÇ ÀÚ·áÇüµµ È®ÀÎÇÕ´Ï´Ù.

¨ì PHP 4.2.0 ÀÌÀü¿¡, array_search()´Â ½ÇÆнÿ¡ FALSE ´ë½Å NULLÀ» ¹ÝȯÇß½À´Ï´Ù.

¨í ÀÌ ÇÔ¼ö´Â ³í¸® FALSE¸¦ ¹ÝȯÇÏÁö¸¸, 0À̳ª "" µî, ³í¸® FALSE·Î Ãë±ÞÇÒ ¼ö ÀÖ´Â ´Ù¸¥ °ªÀ» ¹ÝȯÇÒ ¼ö ÀÖ½À´Ï´Ù.

¨î ÀÌ ÇÔ¼öÀÇ ¹Ýȯ°ªÀ» È®ÀÎÇÏ·Á¸é === ¿¬»êÀÚ¸¦ ÀÌ¿ëÇϽʽÿÀ.


[»ç¿ë¿¹]

<?
$main_category = "¼­¿ï½Ã|ÀÎõ½Ã|ºÎ»ê½Ã|";
$sub_category = "°­³²±¸^°ü¾Ç±¸^ÀºÆò±¸|°­È­±º^°è¾ç±¸^³²±¸|¿µµµ±¸^Áß±¸^ÇØ¿î´ë±¸";

$sca = "ÀÎõ½Ã";

$arr    = explode("|", $main_category);
$arr1   = explode("|", $sub_category);
$key    = array_search($sca, $arr);
$cate   = explode("^", $arr1[$key]);

echo $key; // 1
var_dump($cate); // array(3) { [0]=> string(9) "°­È­±º" [1]=> string(9) "°è¾ç±¸" [2]=> string(6) "³²±¸" }
?>



http://docs.php.net/manual/kr/function.array-search.php
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