1. Formatted output
Chop is the alias of RTrim ();
LTrim ()
Trim ()
NL2BR () converts \ n to
print,echo,printf (), sprintf ():
Echo () is not a function, print () is a function, has a return value, boolen,false,true;
printf () Formatted output
--function, the text formatted after the output, directly call the system call for IO, he is non-buffered. Such as:
$name = "Hunte";
$age = 25;
printf ("My name is%s, age%d", $name, $age);
sprintf () Formats the string and assigns it to a variable, but does not output, similar to C.
echo nl2br ("foo isn ' t\n bar");
echo "foo isn ' t\n bar";
?>
-Similar to printf, but not print, but return formatted text, the rest is the same as printf. Such as:
Char sql[256];
sprintf (SQL, "select * FROM table where no = '%s '", Bankno);
Its function simply assigns the statement inside the "" to the variable SQL.
Strtolower
Strtoupper
Ucwords
Ucfirst
2. Connection and segmentation of strings
(1) array explode (string input, string separator, int limit)
Use one string to split another string
Example 1
$pizza = "Piece1 piece2 piece3 piece4 piece5 piece6";
$pieces = Explode ("", $pizza);
echo $pieces [0]; Piece1
echo $pieces [1]; Piece2
Example 2
$data = "Foo:*:1023:1000::/home/foo:/bin/sh";
List ($user, $pass, $uid, $gid, $gecos, $home, $shell) = Explode (":", $data);
Echo $user; Foo
Echo $pass; // *
?>
Example 2. Example of the limit parameter
$str = ' One|two|three|four ';
A positive limit
Print_r (Explode (' | ', $STR, 2));
Limit of negative numbers
Print_r (Explode (' | ', $STR,-1));
?>
String Strtok (string input, string separator)
$string = "This Is\tan example\nstring";
/* Use tab and newline as tokenizing characters as well */
$tok = Strtok ($string, "\n\t");
Holding a space, \n,\t as a token split string
while ($tok!== false) {
echo "Word= $tok
";
$tok = Strtok ("\n\t");
}
?>
Results:
Word=this
Word=is
Word=an
Word=example
Word=string
(2.) Interception of strings
$test = "Your customer service is excellent";
Echo substr ($test, 1);////////our customer service is excellent
echo "
";
Echo substr ($test,-9);//////length from the end is 9excellent
echo "
";
Echo substr ($test, 0,4);////starting from 0 position length is 4Your
echo "
";
Echo substr ($test, 5,-13);/starting from fourth to 13th character of customer service
echo "
";
$test = "Your customer service is excellent";
Echo substr ($test, 1);
echo "
";
Echo substr ($test,-11);
echo "
";
Echo substr ($test, 0,6);
echo "
";
Echo substr ($test, 5,-13);
echo "
";
Our customer service is excellent
S excellent
Your C
Customer Service
(3) Link to join () string
3. Searching for strings
(1) string strstr (String haystack, string needle) aliases: Strchr,stristr and STRSTR are similar in that they are case insensitive
STRRCHR () Instead, looks for the last occurrence of the string
The first occurrence of the string
$email = ' user@example.com ';
$domain = Strstr ($email, ' @ ');
Echo $domain; Prints @example. com
?>
$email = ' user@example.com ';
$domain =strstr ($email, ' e ');
$domain 2 =strrchr ($email, ' e ');//The last occurrence of a string
Echo $domain;
echo "
";
echo $domain 2;
Er@example.com
E.com
(2) Find location
int Strpos (string str,string needle,[int offset]) did not find the return is False
Returns the location of the needle found in Str starting with offset
$eg: $t-' Hello World ';
Echo Strpos ($t, ' O ', 5);
7 starting from O, find the position of the variable o, the result is 7
int Strrpos ()
5. Replace
Str_replace ("%body%", "Blank", "
6. Small capitalization issues
Strpos
Finds the position of the first occurrence of a string in a string
Strrpos
Finds a character in a string, followed by the first occurrence of a position after the initial time.
Strpos (Stripos not case)
Strrpos (Strripos not case)
Strstr
STRISTR (no case)
Str_replace
Str_ireplace (no case)
http://www.bkjia.com/PHPjc/318672.html www.bkjia.com true http://www.bkjia.com/PHPjc/318672.html techarticle 1. Formatted output chop is an alias for RTrim (), LTrim () trim () nl2br () convert \ n to BR print,echo,printf (), sprintf (): Echo () is not a function, print () is a function, There are return values, Boolen, ...
