php»ù´¡²¿·Ö
$n = $i++;
echo $n, $i++, ++$i
2. includeÓërequireµÄÇø±ð£¿
3. ÒÔÏ´úÂ룬ÊÇÅжÏ×Ö·û´®ÖÐÊÇ·ñ´æÔÚ#·ûºÅ, ´íÎóÖ®´¦ÔÚÓÚ£¿
if ( strpos($str, ¡°#¡±)) { ¡ }
4. ³ÌÐò´úÂëʹÓÃutf-±àÂ룬ÒÔÏ´úÂëÊä³ö½á¹ûÊÇʲô£¿strlenº¯ÊýÊǼÆËã×Ö·û´®µÄ×Ö½ÚÊý»¹ÊÇ×Ö·ûÊý£¿
$str = ¡°ÄúºÃhello¡±;
echo strlen($str);
5. ʲôÊÇʱ¼ä´Á ʱ¼ä´ÁÄÜ´ú±íµÄ×îСÄê·ÝºÍ×î´óÄê·ÝÊǶàÉÙ£¿
6. php.iniÅäÖÃÎļþÖÐmagic_quotes_gpc, magic_quotes_runtimeµÄ×÷ÓÃÊÇʲô£¿Ó¦¸Ã¿ªÆô»¹Êǹرգ¿
7. ÏÖÓÐÒ»¸öÎı¾Ìå»ý´óÔ¼2G, ¼ÆËã»úÄÚ´æÖ»ÓÐ1G, ÐèҪʹÓÃphp¶ÔÊý¾Ý½øÐзÖÎö£¬ÈçºÎ¶ÁÈ¡Èç´ËÌå»ýµÄÎļþ£¿
8. phpµÄÐòÁл¯¸÷·´ÐòÁл¯£¬ÓкÎÓÃ;£¿
9. phpµÄħÊõ·½Ê½°üº¬ÄÄЩ(Ô½¶àÔ½ºÃ)£¿ ÔÚºÎÇé¿öϱ»×Ô¶¯µ÷Óã¿
10. ArrayAccess½Ó¿ÚµÄ×÷ÓÃÊÇʲô£¿
11. phpÀàµÄ¾²Ì¬³ÉÔ±±äÁ¿Óë·Ç¾²Ì¬³ÉÔ±±äÁ¿ÓкÎÇø±ð£¿
12. ÈçºÎ¼Ç¼php³ÌÐò´íÎóÖÁϵͳÈÕÖ¾£¨ÈçwindowsµÄʼþ²é¿´Æ÷£¬LinuxµÄsyslog£©
13. SQL×¢Èë×îÓÐЧµÄ·ÀÓù·½Ê½ÊÇʲô£¿
mysqlÊý¾Ý¿â²¿·Ö£¨mysql°æ±¾Îª 5.0+£©
1. ¼ÙÉèmysqlÊý¾Ý±íʹÓÃutf-8±àÂë, Êý×ÖÀàÐ;ùʹÓÃÖ¸³öÒÔϸ÷¸öÊý¾ÝÀàÐ͵ķ¶Î§ºÍ³¤¶È
2. ¼ÙÉèmysqlÊý¾Ý±íʹÓÃutf-8±àÂë, ÌîдÒÔϱí¸ñ
3. char(100)Óëvarchar(100)ÓкÎÇø±ð£¿
4. ÈçºÎ²é¿´Ä³¸öSQLµÄÖ´Ðмƻ®£¬ÒÔ±ã·ÖÎöÆäÐÔÄÜÎÊÌ⣿
HTTPÐÒé
1. http 200, 404, 304״̬Âë°ãÊǺκ¬Ò壿
2. http gzipѹËõ´«Êä, ÊÇÔõô»ØÊ£¿
3. һЩÍøÕ¾£¨Èçbaidu, 163.com£©,ʹÓÃÊÖ»úºÍµçÄÔ·ÃÎÊÏàͬÓòÃûʱ£¬³ÊÏÖµÄÒ³Ãæ²¢²»Ïàͬ, ÈçºÎʵÏÖ£¿
4. COOKIEÓësessionµÄ¹Øϵ £¬½ûÓÃä¯ÀÀÆ÷µÄcookie, sessionÄÜÕý³£¹¤×÷Âð£¿
5. ĬÈÏÇé¿öÏ£¬sessionÔÚä¯ÀÀÆ÷¹Ø±Õʱ½«Ê§Ð§£¬Èç¹ûÒªÑÓ³¤sessionµÄÉú´æÖÜÆÚ(±ÈÈçÒ»¸öÔÂ)£¬ÈçºÎ´¦Àí£¿
6. XSS, CSRF¹¥»÷ÈçºÎ·ÀÖ¹£¿
7. ÈçºÎ¸ø¶¯Ì¬Îļþ£¨ÈçphpÒ³Ã棩×÷ä¯ÀÀÆ÷»º´æ£¿£¨¼´µÚ¶þ´ÎË¢ÐÂä¯ÀÀÆ÷ʱ£¬·µ»Ø304״̬£©
8. ÔÚHTTP Ó¦ÓóÌÐò²ã£¬À´Ô´ IP µÄÖØÒªÐÔ²»ÑÔ¶øÓÀýÈç±íµ¥Ìá½»ÏÞÖÆ£¬ÆµÂʵȵȾùÐèÒª¿Í»§¶Ë IP ÐÅÏ¢¡£Ê¹ÓÃÁ÷ÐÐµÄ Discuz X2.5 µÄÎļþ source/class/discuz/discuz_application.php ÖеĴúÂëƬ¶Ï£º
private function _get_client_ip() {
$ip = $_SERVER['REMOTE_ADDR'];
if(isset($_SERVER['HTTP_CLIENT_IP']) && preg_match(¡®/^([0-9]{1,3}\.){3}[0-9]{1,3}$/¡¯, $_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
´Ë³ÌÐò´úÂ룬´æÔÚ¡°IPαÔ족֮©¶´£¬ÈçºÎ´¦Àí£¿
Ç°¶Ë¼¼Êõ
1. ajaxÊÇÎÞ·¨¿ç¶¥¼¶ÓòÃûµÄ£¬ÄÇôҪʵÏÖ¿çÓòÃûajaxÊý¾Ý»ñÈ¡£¬ÓÐÄÄЩ·½·¨£¿
2. ÊÇ·ñÊìϤjquery£¿
3. ajaxÓ¦ÓÃÖУ¬json¸ñʽΪºÎÁ÷ÐУ¿
×ۺϼ¼Êõ