在w3cschool.com学习PHP基础语法

在w3cschool.com学习PHP基础语法： <form action="test1.php" method="post"> Name: <input type="text" name="fname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> <?php //The following function has two parameters: function writeName($fname,$punctuation) { echo $fname . " Refsnes" . $punctuation . "<br />"; } echo "My name is "; writeName("Kai Jim","?"); //PHP Functions - Return values function add($x,$y) { $total=$x+$y; return $total; } echo "1 + 16 = " . add(1,16) . "<br />"; ?> <?php //Create a PHP Function /*function writeName() { echo "Kai Jim Refsnes"; } echo "My name is "; writeName(); echo "<br />" */ //PHP Functions - Adding parameters function writeN($fname) { echo $fname . " Refsnes.<br />"; } echo "My name is "; writeN("Kai Jim"); echo "My sister's name is "; writeN("Hege"); ?> <?php //The do...while Statement $i=1; do { $i++; echo "The number is " . $i . "<br />"; } while($i<=5); ?> <?php //The while Loop $i=1; while($i<=5) { echo "The number is " . $i . "<br />"; $i++; } ?> <?php echo "1+1"; echo '1+1'; ?> <?php //PHP Arrays $cars=array("Saab","Volvo","BMW","Toyota"); echo $cars[0] . " and " . $cars[1] . " are Swedish cars.<br />"; ?> <?php //PHP Switch $x=2; switch($x) { case 1: echo "Number 1"; break; case 2: echo "Number 2"; break; case 3: echo "Number 3";break; default:echo "No number between 1 and 3"; } ?> <?php $xml = '<?xml version="1.0" encoding="UTF-8" STANDALONE="no"?>'; echo $xml; ?> <?php //PHP If...Else /*This is a comment block */ /**************************/ $true_or_false=0; if($true_or_false){ ?> <p>The value of $true_or_false is true.</p> <?php }else{ ?> <p>The value of $true_or_false id false.<p> <?php } //use echo to do the same thing - more effecient and easier to read in my opinion if ($ture_or_false) { echo '<p>The value of $true_or _false is true.</p>'; } else { echo '<p>The value of $true_or_false is false.</p>'; } $txt="Hello World! Two."; $d=date("D"); if ($d=="Fri") { echo "Hello!<br />"; echo "Have a nice weekend!<br />"; echo "See you on Monday!"; } elseif ($d=="Sun") echo "Have a nice Sunday!"; else echo "Have a nice day!!"; ?> 自由，发展。http://www.xieguang133.com/