PHP 알려지지 않은 트릭 몇가지

echo __DIR__;   //현재 디렉토리 경로

	hr();
	echo TRUE ?: FALSE; // TRUE
	hr();
	echo FALSE ?: TRUE; // FALSE;
	hr();
	echo "" ?: "1"; //1;
	hr();
	echo "" ?: "2"; //2;
	hr();
	print_r( array()?:array(1) ); //Array ( [0] => 1 )
	hr();
	echo strlen("")?: strlen("a"); //1

	hr("Double Encoding");

	$FOO = "BAR > FOO & THAT"S ALL";

	echo "	

 ";
	echo htmlspecialchars($FOO, ENT_COMPAT, 'UTF-8');
	echo "	

 ";
	echo htmlentities($FOO, ENT_COMPAT, 'UTF-8');

    //==> BAR > FOO && THAT&"S ALL
	echo "	

 ";
	echo htmlspecialchars($FOO, ENT_COMPAT, 'UTF-8', false);
	echo "	

 ";
	echo htmlentities($FOO, ENT_COMPAT, 'UTF-8', false);

	//==> BAR > FOO &; THAT"S ALL

	hr("Date Parsing");

	$date = date_create_from_format("Y-m-d", "2011-06-30");
	var_dump( date_format($date, 'F d, Y') ) ; // 'June 30, 2011'

	/*
	// 세션 랜성 생성을 고치다.  /DEV/URANDOM
	SESSION.ENTROPY_FILE = __DIR__ // /DEV/URANDOM
	SESSION.ENTROPY_LENGTH = 32;

	//JAVASCRIPT 쿠기, 세션
	SESSION.USE_ONLY_COOKIES = 1;
	SESSION.COOKIE_HTTPONLY = 1;
	*/

	//SPL TRICKS ;

    hr();
    //간단하 재귀 디렉토리 탐색
   foreach( new RECURSIVEITERATORITERATOR ( new RECURSIVEDIRECTORYITERATOR('.') )  as $file ) {
		echo $file , "\n";
   };

    hr();

	//재귀 디렉토리 매취 여행

	$IT = new RECURSIVEITERATORITERATOR( new RECURSIVEDIRECTORYITERATOR('.') );

	$Regx = new Regexiterator( $IT, '/^.*\.PHP$/i', Recursiveregexiterator::GET_MATCH );

	foreach ( $Regx as $file ) {
		echo $file[0] , "\n";
	};


	// IGBINARY  감탐한 PHP SERIALIZER
	// 빠르다 , MORE COMPACT
	// EXTENSION = IGBINARY.SO
	// SESSION.SERIALIZE_HANDLER = IGBINARY
	// http://GITHUB.COM/PHADEJ/IGBINARY

	/*
	serialize ( $_SERVER );

	ini_set( "IGBINARY.COMPACT_STRINGS", 0);
	IGBINARY_SERIALIZE($_SERVER);

	ini_set("IGBINARY.COMPACT_STRINGS", 1);
	IGBINARY_SERIALIZE($_SERVER);

	// UN-SERIALIZE
	IGBINAY_UNSERIALIZE($X);
	*/


	// XHPROF
	// 가볍운 php 프로파일러

	// HTTP://PECL.PHP.NET/PACKAGE/XHPROF
	// HTTP://GITHUB.COM/PREINHEIMER/XHPROF


	/*
		AUTO_PREPEND_FILE = /XHPROF/EXTERNAL/HEADER.PHP

		include_once __DIR__ . '/XHPROF_LIB/CONFIG.PHP';
		include_once __DIR__ . '/XHPROF_LIB/UTILS/XHPROF_LIB.PHP';
		include_once __DIR__ . '/XHPROF_LIB/UTILS/XHPROF_RUNS.PHP';

		XHPROF_ENABLE( XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY);

		AUTO_APPEND_FILE = /XHPROF/EXTERNAL/FOOTER.PHP

		$XHPROF_DATA = XHPROF_DISABLE();
		$XHPROF_RUNS = NEW XHPROFRUNS_DEFAULT();
		$XHPROF_RUNS->SAVE_RUN( $XHPROF_DATA, 'APPNAME', NULL, $_XHPROF);

	*/