PHP Introduction need to master several of the functional Code _php tutorial

Classic Loop examples


<title>Classic Loop examples</title>


for ($counter = 1; $counter <= 6; $counter + +)//cycle 6 times
{
Print (" counter is $counter
n "); Print 6 times
}
?>



for advanced use


<title>For advanced use</title>


/*
* * Print the necessary explanatory text
*/
Print (" How many days is it from Monday? n ");
Print ("

n ");
for ($currentDate = Date ("U");//define $currentdate time format
Date ("L", $currentDate)! = "Monday"; Determine if the current system time is Monday
$currentDate + = (60 * 60 * 24))//Current time plus 1 days
{
/*
* * Print time name
*/
Print ("
1. " . Date ("L", $currentDate). "N");
   }
   Print ("

n ");
?>



simple invocation of the function:


<title>A simple function</title>



function Printbold ($inputText)//define function Printbold ()
{
Print (" " . $inputText. ""); Print $inputtext
}
Print ("This line is not aggravating!")
n "); Print a string directly
Printbold ("This line is aggravating!!! "); Call function Printbold () functions
Print ("
n ");
Print ("This line is not aggravating!")
n "); Print a string directly
?>




functions that have return values


<title>Functions that have return values</title>



function Makebold ($inputText)//define Functions Makebold ()
{
$boldedText = " ";
$boldedText. = $inputText;
$boldedText. = "";
return ($boldedText); Return variable $boldedtext
}
Print ("This line does not aggravate!!!"
n "); Print a string directly
Print (Makebold ("This line is aggravated!!! ") . "
n ");//Call Function Makebold ()
Print ("This line does not aggravate!!!"
n "); Print a string directly
?>




functions with default parameters


<title>Functions with default parameters</title>



function printcolored ($Text, $Color = "BLACK")//define function functions
{
Print ("$Text"); Get the contents and colors of a string
}
Printcolored ("This is the black color of the word!") "); Calling function functions
Print ("

n ");
Printcolored ("This is the blue color of the word!") "," Blue "); Calling function functions
Print ("
n ");
?>




using a recursive algorithm to determine whether an integer


<title>Judging integers</title>


function Checkinteger ($Number)
{
if ($Number > 1)
{
/* integer minus 1 is still an integer */
Return (Checkinteger ($Number-1));
}
ElseIf ($Number < 0)
{
/* For a negative number, */
/* You can analyze the absolute value of it */
Return (Checkinteger (( -1) * $Number-1));//absolute value, negative number by integer analysis
}
Else
{
if (($Number > 0) and ($Number < 1))
{
Return ("Certainly not");
}
Else
{
/* 0 and 1 are integers */
/* According to the relevant mathematical definition */
Return ("yes");
}
}
}
Print (" is 0 an integer? " .
Checkinteger (0). "
n ");
Print (" is 7 an integer? " .
Checkinteger (7). "
n ");
Print (" What about 3.5? " . Checkinteger (3.5). "
n ");
Print (" What about 5? " . Checkinteger (-5). "
n ");
Print (" and-9.2? " . Checkinteger (-9.2). "
n ");
?>

initializing an array


<title>Initializing an array</title>


$monthName = Array (1=> "January", "February", "March",//initialization of an array
"April", "may", "June", "July", "August",
"September", "October", "November", "December");
Print ("May in English" is$monthName [5]。
n ");//Print the 6th element in the array
?>




gets the elements in the array


<title>Gets the elements in the array</title>

$monthName = Array (
/* Define $MONTHNAME[1] to $monthname[12]*/
1=> "January", "February", "March",
"April", "may", "June",
"July", "August", "September",
"October", "November", "December",
/* Define $monthname["Jan"] to $monthname["Dec"]*/
"Jan" = "January", "Feb" = "February",
"Mar" = "March", "APR" and "April",
"May" = "may", "June" and "June",
"Jul" = "July", "the August" and "the"
"Sep" = "September", "Oct" = "October",
"Nov" = "November", "Dec" and "December",
/* Define $monthname["Jan"] to $monthname["Dec"]*/
"January" = "January", "February" and "February",
"March" = "March", "April" and "April",
"May" = "may", "June" and "June"
"July" = "July", "August" and "August",
"September" = "September", "October" and "October",
"November" = "November", "December" and "December"
);
/* Print related elements */
Print ("Month5Is" . $monthName [5]. "
n ");
Print ("Month theIs" . $monthName ["the"]. "
n ");
Print ("MonthJuneIs" . $monthName ["June"]. "
n ");
?>



Create a multidimensional array


<title>Create a multidimensional array</title>

$Cities = Array (//two-D arrays Array ()
"North China" =>array (
"Beijing",
"Tianjin",
Shijiazhuang
),
"Northwest" =>array (
"Xian",
Lhasa
)
);
Print ("North China:". $Cities ["North China"][0]); Print $cities["North China"][0]
?>



PHP 4.0 for tabular printing


<title>Implement table-like printing</title>


/*
* * Data table format
*/
Print ("

n "); The form starts for ($Row =1; $Row <=; $Row + +) {print (" n "); Start line//Do all column for ($Column =1; $Column <=; $Column + +) {print (" "); } print (" n "); End of Line} print ("

");//Start column Print ($Row * $Column);//TABLE element product Print ("

n "); End of table
?>



view some of the system's variables


<title>View the environment variables for PHP</title>


Print ("You are using the file name as:");
Print (__file__);
Print ("
n ");
Print ("");
Print ("Your operating system is:");
Print (Php_os);
Print ("");
Print ("Your PHP version is:");
Print (php_version)
?>



open a local or remote file


<title>Open a local or remote file</title>


Print ("

Open file via HTTP protocol

n ");
Open file via HTTP protocol
if (! ( $myFile = fopen ("D:web/web/php/test/data.txt", "R")))
{
Print ("File cannot be opened");
Exit
}
while (!feof ($myFile))//Loop
{
Read the contents of a file by line
$myLine = FGETSS ($myFile, 255);
Print ("$myLine
n ");
}
Closing a handle to a file
Fclose ($myFile);
?>



several ways to open a file compare


<title>Read File contents</title>


Open a file to print each character of a file at the same time
if ($myFile = fopen ("Data.txt", "R"))
{
while (!feof ($myFile))
{
$myCharacter = fgetc ($myFile);
Print ($myCharacter);
}
Fclose ($myFile);
}
?>

Open a file and print each line of the file
if ($myFile = fopen ("Data.txt", "R"))
{
while (!feof ($myFile))
{
$myLine = fgets ($myFile, 255);
Print ($myLine);
}
Fclose ($myFile);
}
?>

/* Open the file while printing each line of the file,
Also remove the HTML language from the retrieved string
*/
if ($myFile = fopen ("Data.txt", "R"))
{
while (!feof ($myFile))
{
$myLine = FGETSS ($myFile, 255);
Print ($myLine);
}
Fclose ($myFile);
}
?>



accessing file Common Properties


<title>Accessing file Common Properties</title>




Print ("Owner of File (UID value):");
Print (Fileowner ("Data.txt"). "
");
Print ("Size of File:");
Print (FileSize ("Data.txt"). "
");
Print ("Type of File:");
Print (FileType ("data.txt"). "
");
?>

invoke text file contents


Invoke text file contents

Open a file and print each line
$myFile = File ("Data.txt");
for ($index = 0; $index < count ($myFile); $index + +)
{
Print ($myFile [$index]. "
");
}
?>




Create a directory function


<title>Create a directory function</title>


if (mkdir ("MyDir1", 0777))//function to create the directory
{
Print ("Directory creation succeeded"); Directory established successfully
}
Else
{
Print ("Directory Setup failed!"); Directory Setup failed
}
?>



Browse Catalogs


<title>Browse Catalogs</title>


Navigating the structure of a directory using a table
Print ("















n "); Create the header print for the table (" n "); Print (" n"); Print (" n"); Print (" n "); $myDirectory = Opendir ("."); Create a handle to the operation directory//read out every subkey in the directory while ($entryName = Readdir ($myDirectory)) {print (" "); Print (" "); Print (" "); Print (" n "); } closedir ($myDirectory); Close the catalog print ("

filename	size of File
$entryName	"); Print (FileSize ($entryName)); Print ("

n ");
?>



PHP Related Information


<title>PHP Related Information</title>


Phpinfo ();
?>



commonly used numerical judgment function


<title>Commonly used numerical judgment function</title>


Judging arrays
$colors = Array ("Red", "Blue", "green");
if (Is_array ($colors))
{
Print ("Colors is an array". "
");
}
Double Precision number judgment
$Temperature = 15.23;
if (is_double ($Temperature))
{
Print ("Temperature is a double". "
");
}
Integer judgments
$PageCount = 2234;
if (Is_integer ($PageCount))
{
Print ("$PageCount is an integer". "
");
}
Object judgment
Class Widget
{
var $name;
var $length;
}
$thing = new Widget;
if (Is_object ($thing))
{
Print ("thing is an object". "
");
}
Character judgment
$Greeting = "Hello";
if (is_string ($Greeting))
{
Print ("Greeting is a string". "
");
}
?>



File Upload Interface


<title>File Upload Interface</title>


if ($UploadAction) {
$UploadAction = 0;
$TimeLimit = 60;
/* Set the time-out limit to the default time of 30s, set to 0 for unlimited time */
Set_time_limit ($TimeLimit);
If ($Upfile! = "None") &&
($Upfile! = ""))
{
$Filepath = "D:webwebphptest"; Upload file storage path
$FileName = $Filepath. $Upfile _name;
if ($Upfile _size <1024)//upload file size
{$FileSize = (string) $Upfile _size. "Byte";}
ElseIf ($Upfile _size < (1024 * 1024))
{
$FileSize = Number_format ((double) ($Upfile _size/1024), 1). "KB";
}
Else
{
$FileSize = Number_format ((double) ($Upfile _size/(1024*1024)), 1). " MB ";
}
if (!file_exists ($FileName))
{
if (copy ($Upfile, $FileName))
{unlink ($Upfile);
echo "

n ";
echo "File $Upfile _name uploaded successfully! ";
echo "

n ";
echo "File location: $FileName";
echo "

n ";
echo "File size: $FileSize";
echo "

n ";
}
Else
{echo ' file $Upfile _name upload failed! "; }
}
Else
{echo ' file $Upfile _name already exists! "; }
}
Else
{echo "You did not select any file upload! "; }
Set_time_limit (30); Restore default timeout settings
}
?>

http://www.bkjia.com/PHPjc/371530.html www.bkjia.com true http://www.bkjia.com/PHPjc/371530.html techarticle Classic Loop Example HTML HEAD TITLE Classic Loop Example/title/head BODY for ($counter =1; $counter =6; $counter + +)//loop 6 times {print (bcounteris$ COUNTER/BBRN);//print 6 times}? /body/h ...

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