Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

PHPÖÐÕýÔò±í´ïʽµÄʹÓ÷½·¨[±Ê¼Ç]

ÔÚѧϰphpʱ£¬¿´µ½µÄ£¬×ö¸ö±Ê¼Ç
×Ö·û´®Í·²¿£º^
<?php echo ereg(“^hello”,”hello world!”); ?>
 
×Ö·û´®Î²²¿£º$
<?php echo ereg(“bye$”,”goodbye”); ?>
 
ÈÎÒâµÄµ¥¸ö×Ö·û£º.
<?php echo ereg(“.”,”goodbye”); ?>
 
ÏÞÖÆÆ¥Åä×Ö·ûÊýÁ¿£º{}                         
<?php echo ereg(“.{5}$”,”12345”); ?>          //ÖÁÉÙÔÚβ²¿³öÏÖ5¸öÈÎÒâ×Ö·û
 
<?php echo ereg(“a{1,3}$”,”aaa”); ?>           //ÖÁÉÙÔÚβ²¿³öÏÖ1-3¸ö×Ö·ûa
 
Áã´Î»ò¶à´ÎÖØ¸´×Ö·û£º*
<?php echo ereg(“t*”,”tom”); ?>             //t¿ÉÒÔ³öÏÖÁã´Î»òÖØ¸´£¬ÈκÎ×Ö·û¶¼·µ»Ø true
 
Ò»´Î»ò¶à´ÎÖØ¸´×Ö·û£º+
<?php echo ereg(“t+”,”tom”); ?>                    //tÖÁÉÙÒª³öÏÖÒ»´Î
 
Áã´Î»òÒ»´ÎÖØ¸´×Ö·û£º?
<?php echo ereg(“t?”,”tom”); ?>                     //tÖ»ÄܳöÏÖÒ»´Î
 
¿Õ¸ñ×Ö·û£º[[:space:]]
<?php echo ereg("hello[[:space:]]?world","hello world"); ?>
 
ģʽ·Ö×é []
<?php echo ereg("^[a-z]+$","hello"); ?>          //aµ½zµÄËùÓÐСд×Ö·û
<?php echo ereg("^[a-zA-Z]+$","hello"); ?>   //aµ½zµÄËùÓдóСд×Ö·û
 
´ÊÓï·Ö×é |
<?php echo ereg("^(ÕÅ|Àî).+$","ÕÅÈý"); ?>           //ÕÅ»òÀͷ£¬ºóÃæÖÁÉÙÒ»¸ö×Ö·û
 
ÌØÊâ×Ö·û(×Ö·ûתÒå) \    &


Ïà¹ØÎĵµ£º

PHP¿ª·¢ÍøÕ¾´úÂë±àд¹æ·¶

Ò»¡¢ ±äÁ¿ÃüÃû
a) ËùÓÐ×Öĸ¶¼Ê¹ÓÃСд
b) Ê××Öĸ¸ù¾Ý±äÁ¿ÖµÀàÐÍÖ¸¶¨
i. ÕûÊýi
ii. ¸¡µãÊýf
iii. ×Ö·û´®s
iv. ²¼¶ûÖµb
v. Êý×éa
vi. ¶ÔÏóo
vii. ×ÊÔ´r
viii. »ìºÏÀàÐÍm
c) ʹÓÃ’_’×÷Ϊÿһ¸ö´ÊµÄ·Ö½ç
ÀýÈ磺
$i_age_max = 10;
$f_price = 22.5;
$s_name =‘harry’;
$b_flag = true; ......

ʲôÊÇPHPÀàºÍÀàµÄ¶ÔÏó(PHPµÄÀà¼ò½é)

 
ÀࣨClass£©£ºÊÇһЩ±äÁ¿ÓëһЩʹÓÃÕâЩ±äÁ¿µÄº¯ÊýµÄ¼¯ºÏ¡£
¿É¼òµ¥Àí½âΪº¯ÊýºÍ±äÁ¿µÄ¼¯ºÏ£¬»ò±äÁ¿ºÍº¯ÊýµÄ¶¨ÒåµÄ¼¯ºÏ¡£
Óï·¨ÊÇ£º
class Class_name //ϰ¹ßÉÏÀàµÄµÚÒ»¸ö×Ö·ûΪ´óд£¬²¢ÇÒ±ØÐë·ûºÏ±äÁ¿µÄÃüÃû¹æÔò¡£
{
//º¯ÊýÓë±äÁ¿µÄ¼¯ºÏ(һЩ±äÁ¿(Àà³ÉÔ±)ºÍº¯Êý(ÐÐΪ·½·¨)µÄ¶¨Òå)¡£
}
Êý¾Ý³ÉÔ±(±äÁ¿)ÔÚÀ ......

php¶àÏß³ÌÉÏÏÂÎÄÖа²È«Ð´Îļþ

Ìṩһ¸öphp¶àÏß³ÌÉÏÏÂÎÄÖа²È«Ð´ÎļþµÄʵÏÖ·½·¨¡£Õâ¸öʵÏÖûÓÐʹÓÃphp µÄfile lock»úÖÆ£¬Ê¹ÓõÄÊÇÁÙʱÎļþ»úÖÆ¡£¶àÏß³ÌÖеĸ÷¸öÏ̶߳¼ÊǶԸ÷×Ô£¨Ã¿¸öÏ̶߳ÀÕ¼Ò»¸ö£©µÄÁÙʱÎļþд£¬È»ºóÔÙͬ²½µ½Ô­ÎļþÖС£
<?php
/**
* @usage: used to offer safe file write operation in multiple threads context, arbitory file ......

PHPһЩÓÐÒâ˼µÄÐ¡Çø±ð

µ¥ÒýºÅ'ºÍË«ÒýºÅ"µÄÇø±ð£º

Ê×ÏÈÊǵ¥ÒýºÅÒª±ÈË«ÒýºÅÖ´ÐÐЧÂÊÒª¸ß£¬ÒòΪ˫ÒýºÅ»á¶ÔÄÚÈݽøÐÐÔ¤´¦Àí¡£
ÀýÈ磺'$value' Êä³ö×Ö·û $value ; "$value"Êä³ö±äÁ¿$valueµÄÖµ¡£
charºÍvarcharµÄÇø±ð£º

charÊǶ¨³¤¶øvarcharÊDZ䳤£¬charµÄÖ÷ÒªÌØµãÊÇ´æ´¢·½Ê½Ô¤·ÖÅ䣬varcharµ±ËüµÄÊý¾Ý³¤¶È·¢Éú±ä»¯Ê±»áÓ ......

phpѧϰ±Ê¼Ç£¨4£©:³£ÓÃPHPÔËËãÀàÐͽéÉÜÓëÓ¦Óãº

³£ÓÃPHPÔËËãÀàÐͽéÉÜÓëÓ¦ÓÃ
1¡¢ËãÊõÔËËã
Àý£º
    5 * 6 - 12
    2*(28+1)
    
×¢£ºËãÊõÔËËã×ñÑ­ÊýѧÔËËã¹æÔò 
´Ó×óµ½ÓÒ£¬ÏÈËã³Ë³ýºóËã¼Ó¼õ£¬Óöµ½À¨ºÅÏÈËãÀ¨ºÅÄÚ
2¡¢¸³ÖµÔËËã
Àý£º
$a=1;
$a+=2;
$a*=3;
   ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ