一堆php print函数的用法汇总

此代码包含了php通过print输出不同格式的字符串的方法

// report all errors:
error_reporting(E_ALL);
 
// the full path to the current file
print __FILE__;
 
// print the current line
print __LINE__;
 
// print the current class name
print __CLASS__;
 
// print the current method name
print __METHOD__;
 
// the current directory
print dirname(__FILE__);
 
// directory separator of the current
// system (windows = \ and linux = /)
print DIRECTORY_SEPARATOR;
 
// server variables:
print $_SERVER["HTTP_HOST"];
print $_SERVER["REQUEST_URI"];
// more: HTTP_REFERER, SCRIPT_NAME, SERVER_URL
 
// output all:
print_r($_SERVER);
 
// constants:
if (!defined('SOMETHING')) {
    define(SOMETHING, "foobar");
}
print SOMETHING;
 
 
// special syntax for long strings:
// the variable goes till it finds 
// the closing word "EOF;" (it can also be renamed)
$test =<<<EOF
This is an example of an <b>long</b> variable.
You can also put {$some_variables} in here :-)
EOF;
// ^ do not use any spaces in the line above (just "EOQ;")
 
 
// sprintf usage:
print sprintf("here you see var1: %s and var2: %s", $var1, $var2);
 
 
// this function prints it's own name ("test"):
function test(){
    print __FUNCTION__;
}
 
// more reserved constants at: 
// http://de2.php.net/manual/en/reserved.constants.php