\uc6cc\ub4dc\ud504\ub808\uc2a4\ub97c \uc0ac\uc6a9\ud558\ub2e4 \ubcf4\uba74 \ub2e4\uc591\ud55c \ubb38\uc81c\uc5d0 \uc9c1\uba74\ud558\uac8c \ub429\ub2c8\ub2e4. \ud2b9\ud788 PHP \uad00\ub828 \uc624\ub958\ub294 \ud754\ud558\uac8c \ubc1c\uc0dd\ud558\uba70, \uc774\ub97c \ud6a8\uacfc\uc801\uc73c\ub85c \ud574\uacb0\ud558\ub294 \ubc29\ubc95\uc744 \uc544\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \uc774 \uae00\uc5d0\uc11c\ub294 PHP \uc624\ub958 \ud574\uacb0 \ubc0f \ub514\ubc84\uae45 \uae30\ubc95\uc5d0 \ub300\ud574 \ub2e4\ub8e8\uc5b4 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
PHP\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294 \uc624\ub958\ub294 \ud06c\uac8c \uc138 \uac00\uc9c0\ub85c \ub098\ub20c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uac01\uac01\uc758 \uc624\ub958 \uc720\ud615\uc5d0 \ub530\ub77c \ucc98\ub9ac \ubc29\ubc95\uc774 \ub2e4\ub985\ub2c8\ub2e4.<\/p>\n
PHP\uc758 \uc5d0\ub7ec \ub85c\uadf8\ub294 \ubc1c\uc0dd\ud55c \ubaa8\ub4e0 \uc624\ub958\uc758 \uc815\ubcf4\ub97c \uae30\ub85d\ud569\ub2c8\ub2e4. \uc11c\ubc84\uc758 php.ini \ud30c\uc77c\uc5d0\uc11c \uc5d0\ub7ec \ub85c\uadf8 \uc124\uc815\uc744 \ud65c\uc131\ud654\ud558\uc5ec \uc624\ub958 \uba54\uc2dc\uc9c0\ub97c \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\n error_reporting(E_ALL);\n ini_set('display_errors', 1);\n ini_set('log_errors', 1);\n ini_set('error_log', '\/path\/to\/php-error.log');\n <\/pre>\n3.2 WP_DEBUG \ubaa8\ub4dc \ud65c\uc131\ud654<\/h3>\n
\uc6cc\ub4dc\ud504\ub808\uc2a4\uc5d0\uc11c\ub294 \ub514\ubc84\uae45 \ubaa8\ub4dc\ub97c \ud65c\uc131\ud654\ud558\uc5ec \uc624\ub958\ub97c \uc27d\uac8c \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. wp-config.php \ud30c\uc77c\uc5d0 \ub2e4\uc74c \ucf54\ub4dc\ub97c \ucd94\uac00\ud558\uc5ec WP_DEBUG \ubaa8\ub4dc\ub97c \ud65c\uc131\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\n define('WP_DEBUG', true);\n define('WP_DEBUG_LOG', true);\n define('WP_DEBUG_DISPLAY', false);\n <\/pre>\n\uc774\ub807\uac8c \uc124\uc815\ud558\uba74 \uc624\ub958 \uba54\uc2dc\uc9c0\uac00 wp-content\/debug.log \ud30c\uc77c\uc5d0 \uae30\ub85d\ub418\uba70, \ud654\uba74\uc5d0\ub294 \ucd9c\ub825\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n
3.3 \uc9c1\uc811\uc801\uc778 \ucf54\ub4dc \uc810\uac80<\/h3>\n
\ucf54\ub4dc\ub97c \uc9c1\uc811 \ud655\uc778\ud558\ub294 \uac83\ub3c4 \uc911\uc694\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc544\ub798\uc758 \ucf54\ub4dc\ub294 \ubc30\uc5f4\uc5d0\uc11c \uac12\uc744 \ucc3e\ub294 \uacfc\uc815\uc5d0\uc11c \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\n $arr = array(1, 2, 3);\n echo $arr[3]; \/\/ \uacbd\uace0: \ubc30\uc5f4\uc758 \uc778\ub371\uc2a4\uac00 \ubc94\uc704\ub97c \ucd08\uacfc\ud588\uc2b5\ub2c8\ub2e4.\n <\/pre>\n\uc218\uc815\ub41c \ucf54\ub4dc:<\/h4>\n\n if(isset($arr[3])) {\n echo $arr[3];\n } else {\n echo \"\uc778\ub371\uc2a4\uac00 \uc874\uc7ac\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.\";\n }\n <\/pre>\n4. \ub514\ubc84\uae45 \uae30\ubc95<\/h2>\n4.1 var_dump\uc640 print_r<\/h3>\n
\ubcc0\uc218\uc758 \uac12\uc744 \uac80\uc0ac\ud560 \ub54c var_dump()\uc640 print_r() \ud568\uc218\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub4e4 \ud568\uc218\ub294 \ubcc0\uc218\uc758 \uad6c\uc870\uc640 \uac12\uc744 \ucd9c\ub825\ud558\uc5ec \ub514\ubc84\uae45\uc5d0 \ub3c4\uc6c0\uc744 \uc90d\ub2c8\ub2e4.<\/p>\n
\n $data = array('name' => '\ud64d\uae38\ub3d9', 'age' => 30);\n var_dump($data);\n print_r($data);\n <\/pre>\n4.2 Xdebug \uc0ac\uc6a9\ud558\uae30<\/h3>\n
Xdebug\ub294 PHP\uc758 \ub514\ubc84\uae45 \ubc0f \ud504\ub85c\ud30c\uc77c\ub9c1 \ub3c4\uad6c\ub85c, \ub354\uc6b1 \uc815\ubc00\ud558\uac8c \ucf54\ub4dc\ub97c \ubd84\uc11d\ud560 \uc218 \uc788\uac8c \ud574\uc90d\ub2c8\ub2e4. Xdebug\ub97c \uc124\uce58\ud55c \ud6c4, \ub2e4\uc74c\uacfc \uac19\uc774 \uc124\uc815\ud569\ub2c8\ub2e4.<\/p>\n
\n zend_extension=\"\/path\/to\/xdebug.so\"\n xdebug.remote_enable=1\n xdebug.remote_host=localhost\n xdebug.remote_port=9000\n <\/pre>\n5. \uace0\uae09 \ub514\ubc84\uae45 \uae30\ubc95<\/h2>\n5.1 \uc2a4\ud0dd \ud2b8\ub808\uc774\uc2a4(Stack Trace) \ubd84\uc11d\ud558\uae30<\/h3>\n
\uc2a4\ud0dd \ud2b8\ub808\uc774\uc2a4\ub294 \uc624\ub958 \ubc1c\uc0dd \uc2dc \ud638\ucd9c\ub41c \ud568\uc218\uc758 \ub9ac\uc2a4\ud2b8\ub97c \ubcf4\uc5ec\uc90d\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uc624\ub958\uac00 \ubc1c\uc0dd\ud55c \uc704\uce58\uc640 \uacbd\ub85c\ub97c \ud30c\uc545\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub2e4\uc74c \ucf54\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc2a4\ud0dd \ud2b8\ub808\uc774\uc2a4\ub97c \ucd9c\ub825\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\n try {\n throw new Exception(\"\uc624\ub958 \ubc1c\uc0dd!\");\n } catch (Exception $e) {\n echo $e->getMessage();\n echo $e->getTraceAsString();\n }\n <\/pre>\n5.2 PHPUnit\uc73c\ub85c \ud14c\uc2a4\ud2b8\ud558\uae30<\/h3>\n
\ud14c\uc2a4\ud2b8 \uc8fc\ub3c4 \uac1c\ubc1c(TDD) \ubc29\uc2dd\uc744 \ub530\ub974\uae38 \uc6d0\ud55c\ub2e4\uba74 PHPUnit\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. PHPUnit\uc744 \uc0ac\uc6a9\ud558\uba74 \ucf54\ub4dc\uc758 \uae30\ub2a5\uc744 \ud14c\uc2a4\ud2b8\ud558\uace0, \uc624\ub958\ub97c \uc0ac\uc804\uc5d0 \ubc29\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\n class SampleTest extends PHPUnit\\Framework\\TestCase {\n public function testExample() {\n $this->assertTrue(true);\n }\n }\n <\/pre>\n6. \uacb0\ub860<\/h2>\n
\uc6cc\ub4dc\ud504\ub808\uc2a4 \uac1c\ubc1c\uc5d0\uc11c \ubb38\uc81c \ud574\uacb0 \ubc0f \ub514\ubc84\uae45 \uae30\ubc95\uc740 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. \uc801\uc808\ud55c \ub3c4\uad6c\uc640 \uae30\ubc95\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc624\ub958\ub97c \uc2e0\uc18d\ud558\uac8c \ud574\uacb0\ud558\uace0, \ub354 \ub098\uc544\uac00 \ucf54\ub4dc\uc758 \ud488\uc9c8\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5d0\ub7ec \ub85c\uadf8\ub97c \ud655\uc778\ud558\uace0, WP_DEBUG \ubaa8\ub4dc\ub97c \ud65c\uc6a9\ud558\uba70, \ub514\ubc84\uae45 \ub3c4\uad6c\ub97c \uc801\uc808\ud558\uac8c \uc774\uc6a9\ud558\uba74 \uc6d0\ud65c\ud55c \uac1c\ubc1c \ud658\uacbd\uc744 \uc720\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc774 \uae00\uc774 \ubb38\uc81c \ud574\uacb0 \ubc0f \ub514\ubc84\uae45\uc5d0 \ub300\ud55c \uc774\ud574\ub97c \ub192\uc774\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub418\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4. \uc131\uacf5\uc801\uc778 \uc6cc\ub4dc\ud504\ub808\uc2a4 \uac1c\ubc1c\uc744 \uc774\ub8e8\uc2dc\uae38 \uae30\uc6d0\ud569\ub2c8\ub2e4!<\/p>\n
<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"