Php String Uppercase

Generate a random string, including uppercase and lowercase letters and numbers. Function randstr ($ length) {$ hash = ''; $ chars = 'abcdefghijklmnopqrstuvwxyz0123456789abcdefghijklmnopqrstuvwxyz'; $ max = strlen ($ chars) - 1; mt _...

Alert ("Createtechbook". Split (/(? =[a-z))/) Thank you. Copy Code code is as follows: <?php tutorial $str = "Abcdefghi"; /* Preg_match_all ([a-za-z]{1}[a-z]*)? [ ^a-z]/", $str, $array); * * $array =p ...

sprintf (PHP3, PHP4) sprintf---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Returns the formatted string syntax: String sprintf (string format [, mixed args ...]) Description: Returns a string according to format string. Lattice ...

Strtoupper (PHP3, PHP4) strtoupper---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Converts a string to uppercase syntax: String Strtoupper (String string) Description: Returns a string that is converted to uppercase by all alphabetic characters in Str. Note: Alphabetic characters are ...

In PHP to generate a CAPTCHA image is quite simple, because in PHP for us to provide a graphics Gd.dll library, to enable the GD graphics library we just php.ini in the PHP-GD front; Method a $authnum = '; $ychar = "0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z&qu ...

Ucfirst (PHP3, PHP4) ucfirst---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Capitalize the first character of the string syntax: String Ucfirst (String str) Description: If the first character of the argument Str is a letter, it is converted to uppercase. Note: The alphabetic character is made up of the current field ...

Ucwords (PHP3 >= 3.0.3, PHP4) ucwords---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Capitalizes the first character of each word in a string: string Ucwords (String str) Description: If the first character of each word in the argument str is a letter, ...

MD5 is the most common cryptographic algorithm used in Web applications. Since the MD5 is irreversible, the ciphertext after MD5 calculation can not get the original text through the reverse algorithm. The intention of using MD5 encrypted text passwords in Web applications is to prevent the passwords stored in the database from being compromised and then being directly acquired. However, the attackers not only have a large number of password dictionaries, but also set up a lot of MD5 original/ciphertext control database, can quickly find common password MD5 ciphertext, is the efficient way to decipher MD5 ciphertext. However, the number of MD5 ciphertext ...

Sql_regcase (PHP3, PHP4) sql_regcase---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; To make a regular expression case-insensitive syntax: String sql_regcase (String string) Description: Returns a valid regular expression against string, ignoring case ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall 　　A lot of hacker intrusion personal website is an important way to get the administrator account and password through the SQL injection vulnerability, and then openly into your management backstage, upload asp or PHP Trojan Horse, and then the right administrator or do something else. But a little understanding of hashing (MD5 message digest algorithm) encryption ...