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Ò»°ãÓÃË«ÒýºÅ»òµ¥ÒýºÅ±êʶһ¸ö×Ö·û´®¡£±ÈÈç PHP: $str = "i love u";
$str = 'i love u';
ËüÕßÁ½ÕßÊÇÓÐÒ»Ð©Çø±ðµÄ¡£ºóÕß½«Ò»Çе¥ÒýºÅµÄÄÚÈݶ¼»áµ±×÷×Ö·û´¦Àí£»Ç°ÕßÔò²»È»¡£±ÈÈç PHP: $test = "iwind";
$str = "i love $test";
$str1 = 'i love $test';
echo $str; //½«µÃµ½ i love iwind
echo $str1; //½«µÃµ½ i love $test
ͬÑùµÄÒÔÏÂÁ½¸öÀý×ÓµÄÐÐΪҲ²»Ò»ÑùµÄ: PHP: echo "i love \test"; // ½«µÃµ½ i love est,ÒѾ­½«\tÊÓΪתÒå
echo 'i love \test'; // ½«µÃµ½ i love \test
´Ó¶ø¿ÉÒÔ¼òµ¥ÈÏΪ˫ÒýºÅÀïµÄÄÚÈÝÊǾ­¹ý¡°½âÊÍ¡±¹ýµÄ£¬µ¥ÒýºÅµÄÊÇ¡°Ëù¼û¼´ËùµÃ¡±µÄ¡£ÏÔ¶øÒ×¼û£¬Ë«ÒýºÅÐÎʽµÄ¸üΪÁé»îһЩ£¬µ±È»µ¥ÒýºÅ»áÊÊÓÃÓÚÒ»Ð©ÌØÊâµÄ³¡ºÏ£¬ÕâÀï¾Í²»×÷²ûÊöÁË¡£
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PHPÀïµÄÊä³ö×î³£ÓõÄÊÇecho,print.Á½Õß¶¼²»ÊÇÕæÕýµÄº¯Êý£¬¶øÊÇÓïÑÔ¹¹Ô죬ËùÒÔµ÷ÓÃʱ²»±ØÓÃË«À¨ºÅ£¨±ÈÈçecho("test");print("test")).ÔÚÊä³öµÄʱºòÁ½Õß¶¼¿ÉÒÔʵÏÖ¸³Öµ£º PHP: echo $str="test"; //Ò»·½ÃæÊä³ötest,Ò»·½Ãæ°Ñ"test"¸³¸ø×Ö·û´®±äÁ¿ $str
print $str="test";
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echo $return; // Êä³ö1
Ò²ÕýÒòΪÕâ¸öÔ­Òò£¬printÄÜÓ¦ÓÃÓÚ¸´ºÏÓï¾äÖУ¬¶øecho²»ÄÜ: PHP: isset($str) or print "str ±äÁ¿Î´¶¨Òå"; // ½«Êä³ö"str ±äÁ¿Î´¶¨Òå"
isset($str) or echo "str ±äÁ¿Î´¶¨Òå";// ½«Ìáʾ·ÖÎö´íÎó
echoÒ»´Î¿ÉÊä³ö¶à¸ö×Ö·û´®£¬¶øprintÔò²»¿ÉÒÔ£º PHP: echo "i ","love ","iwind"; // ½«Êä³ö "i love iwind"
print "i ","love ","iwind"; // ½«Ìáʾ´íÎó
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