php 通过print输出不同格式的字符串示例

php通过print输出不同格式的字符串的方法，感兴趣的小伙伴，下面一起跟随编程之家 jb51.cc的小编来看看吧。
经测试代码如下：

/**
 * 通过print输出不同格式的字符串
 *
 * @param 
 * @arrange (编程之家) jb51.cc
 **/

// 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:


/***   来自编程之家 jb51.cc（jb51.cc）   ***/