ѧϰPHPµÄ¿ª·¢
½üÀ´ÓÉÓÚ¹¤×÷µÄÐèÒª£¬¿ªÊ¼Ñ§Ï°Ê¹ÓÃPHP¡£
´Ó×òÌìÏÂÎçµ½½ñÌìÉÏÎ磬ÖÕÓÚ°Ñ¿ª·¢»·¾³´î½¨Íê±Ï¡£×ܵÄÀ´Ëµ£º³õ²½µÄÈÏʶÊÇ£ºPHPÔÚÍøÕ¾¿ª·¢ÉÏ£¬¹¦ÄÜ»¹ÊǺÜÇ¿´óµÄ¡£½ñÌìÏÂÎç³õ²½µÄ°ÑÓ﷨ʲôµÄÊìϤһÏ¡£ÒòΪ×ö¿ª·¢Õâô¶àÄêÁË£¬ºÜ¶àÓïÑÔ£¬»¹ÊÇÓеãÏàͬµÄ£¬ËùÒÔ£¬Ñ§Ï°ÆðÀ´²»ÊǺܷѾ¢¡£ºóÌì»ØÀϼң¬Ï£ÍûÄêºóÄÜÔÚPHPÉÏÓÐËùÌá¸ß¡£
Ò»¡¢±íµ¥ÊµÀý£º
<form action="action.php" method="post">
<p>ÐÕÃû: <input type="text" name="name" /></p>
<p>ÄêÁä: <input type="text" name="age" /></p>
<p><input type="submit" /></p>
</form>
ÄãºÃ£¬<?php echo htmlspecialchars($_POST['name']); ?>¡£
Äã <?php echo (int)$_POST['age']; ?> ËêÁË¡£
¶þ¡¢»»ÐÐʵÀý£º
<?php
/*
»»Ðеķ½·¨£º<br />\n
*/
$a=3;
$b=2;
echo "<br />\na+b=".($a+$b);
echo "<br />\na-b=".($a-$b);
echo "<br />\na*b=".($a*$b);
echo "<br />\na/b=".($a/$b);
?>
Ïà¹ØÎĵµ£º
* ÕªÒª£ºCentOS LAMP×÷Ϊ·þÎñÆ÷£¬²»°²×°²»ÐèÒªµÄ×é¼þ£¬ËùÒÔÔÚÑ¡Ôñ×é¼þµÄʱºò£¬²»ÒªÑ¡web·þÎñÆ÷£¬ÒòΪÎÒÃǺóÃæÒªÊÖ¶¯±àÒë°²×°¡£CentOS LAMPϵͳԼ¶¨RPM°üºÍÔ´Âë°ü´æ·ÅλÖÃ
* ±êÇ©£ºCentOS LAMP
*
Oracle°ïÄú׼ȷ¶´²ì¸÷¸öÎïÁ÷ ......
ÔÚÕ⼸ÌìµÄ¹¤×÷¹ý³ÌÖУ¬ÐèҪʵÏÖPHPÔÚ·þÎñÆ÷¶ËÄÜÓëÆäËû³ÌÐòͨÐÅ¡£ºÍÀϺÎÁ©ÈËÑо¿ÁË°ëÌ죬ÖÕÓÚ´óÖÂŪ³öÁËÒ»¸öÓÃWINDOWSµÄÃüÃû¹ÜµÀͨÐŵķ½·¨¡£
Óм¸µãÐèҪעÒâµÄ£º
PHP·þÎñÆ÷¶ËÎÒÃÇÿ´Î¶¼ÊÇÖØйҽÓÃüÃû¹ÜµÀ¡££¨ÕâÑùд£¬PHP¶Ë´úÂëÁ¿¼«ÆäÉÙ£¬¶øÇÒÒ²ºÜ·½±ã¡££©
ÄÇôÎÒÃÇÓÃC/C++дµÄÃüÃû¹ÜµÀ·þÎñÆ÷ÔòÐèҪÿ´ÎͨÐŶ¼´´½¨Ò»´Î¹ ......
ÔÎÄÁ´½Ó£ºhttp://www.phpdo.net/index.php/2010/02/10/1-13/
PHPÖÐÒ»¸ö»ù±¾µÄ½Å±¾ÓÉÁ½²¿·Ö×é³É£ºÖ÷³ÌÐòºÍº¯Êý¡£
º¯Êý²»½ö¿ÉÒÔ¹¹³ÉÒ»¸öPHP½Å±¾µÄ»ù±¾¹¦ÄÜ£¬Ò²Ê¹µÃ³ÌÐò½á¹¹»¯£¬ÓÐÖúÓÚ³ÌÐò´úÂëµÄÖØÓá£
PHPº¯ÊýµÄµ÷ÓÃ
ͨ¹ý°´ÕÕº¯Êý¸ñʽд³öº¯ÊýÒÔ¼°ÏàÓ¦µÄ²ÎÊý¼´¿É£¬ÒÂÓï·¨ÈçÏ£º
String¡¡substr(string¡¡str,int¡¡start) ......
5.¹ØÓÚ±íµ¥Ë¢ÐÂ
ÎÊ£ºÎªÊ²Ã´ÎÒÔÚµã»÷ä¯ÀÀÆ÷µÄºóÍË°´Å¥ºó£¬ËùÓÐ×ֶεÄÐÅÏ¢¶¼±»Çå¿ÕÁË£¿
´ð£ºÕâÊÇÓÉÓÚÄãÔÚÄãµÄ±íµ¥Ìá½»Ò³ÃæÖÐʹÓÃÁË session_start º¯Êý¡£¸Ãº¯Êý»áÇ¿ÖƵ±Ç°Ò³Ãæ²»±»»º´æ¡£½â¾ö°ì·¨Îª£¬ÔÚÄãµÄ Session_start º¯Êýºó¼ÓÈë header("Cache-control: private"); ×¢ÒâÔÚ±¾ÐÐ֮ǰÄãµÄPHP³ÌÐò²»ÄÜÓÐÈκÎÊä³ö¡£
²¹³ä£º ......
¿´
µ½ÕâƪÎÄÕÂ
£¬µ±Ê±¾ÍÀá±¼Á˺ü¸»Ø£¬ÖصãÍƼöÏ£¬Ë³±ãÎÒ×Ô¼ºÒ²×ö¸öÕûÀí¡£
sys_getloadavg()
Õâ¸öº¯Êý
·µ»Øµ±Ç°ÏµÍ³µÄ¸ºÔؾùÖµÐÅÏ¢
£¨µ±È» Windows
ϲ»ÊÊÓã©£¬ÏêϸÎĵµ¿ÉÒÔ·ÔÄ PHP µÄÏà¹ØÎĵµ¡£ÎĵµÖÐÓжÎʾÀý´úÂ룬»ù±¾ÉÏÒ²¾ÍÄÜ¿´³öËüµÄÓÃ;ÁË¡£
<?php
$load = sys_getloadavg();
if ($load[0] > 80) ......