Lab1.1 - Print Statements
I think I have something to say picking up where records Kazakhstan.
<?php
// put your code here
echo 'Hello World!';
echo'<br>'; //换行
echo 'You can join strings '.'by using the dot'; //连接
echo '<br>';
echo 'John'.' '.'Smith';
echo '<br>';
$date = date('d/M/Y'); //日期函数
echo $date;
?>
operation result:
- The code must use the quotation marks that lead live line feed
- The dot operator is used to connect to. eg: 'John', '', 'Smith' is three strings. They even need to take up two points.
- Front PHP variables to add $, date () function is a direct query date, his output value to a date variable and then output.
Method for establishing multiple PHP files in the same project:
1.
2. then his attributes can be extended into php
Lab1.2 - Variables & Datatypes
<?php
// put your code here
$num = 88;
$name = "Wang haohua";
$PI = 3.14;
$success = true;
echo $num." ".$name." ".$PI." ".$success." "."<br>";
echo "$num $name $PI $success <br>";
echo "My name is $name and my facourite number is $num<br>";
echo "Today's date is ". date("d m Y");
?>
operation result:
- Seen by the first two echo: linked by a dot operator and a further effect of space directly hit the string is the same space.
- success is a Boolean variable, so when output is not displayed.
- Predetermined function can be expressed with the date of the date, as shown:
Lab1.3 - Test Datatypes
<?php
// put your code here
$testing ;
echo "is null?".is_null($testing);
echo '<br/>';
$testing = 5;
echo "is an integer?".is_int($testing);
echo '<br/>';
$testing = 5.024;
echo "is a double?".is_double($testing);
echo '<br/>';
$testing =true;
echo "is a boolean?".is_bool($testing);
echo '<br/>';
$testing = array('apple','orange','pear');
echo "is a array?".is_array($testing);
echo '<br/>';
echo 'is numeric?'.is_numeric($testing);
echo '<br/>';
echo 'is a resource?'.is_resource($testing);
echo '<br/>';
echo 'is an array?'. is_array($testing);
echo '<br/>';
$undecided = 3.14;
echo 'is'.$undecided." a double?". is_double($undecided)."<br/>";
settype($undecided, "string");
echo 'is'.$undecided." a string?". is_string($undecided)."<br/>";
settype($undecided, "integer");
echo 'is'.$undecided." an integer?". is_integer($undecided)."<br/>";
settype($undecided, "double");
echo 'is'.$undecided." a double?". is_double($undecided)."<br/>";
settype($undecided, "bool");
echo 'is'.$undecided." a boolean?". is_bool($undecided)."<br/>";
$undecided = 3.14;
$holder = (double)$undecided;
echo 'is '.$holder." a double?". is_double($holder)."<br/>";
$holder = (string)$undecided;
echo 'is '.$holder." a string?". is_string($holder)."<br/>";
$holder = (integer)$undecided;
echo 'is '.$holder." an integer?". is_integer($holder)."<br/>";
$holder = (double)$undecided;
echo 'is '.$holder." a double?". is_double($holder)."<br/>";
$holder = (boolean)$undecided;
echo 'is '.$holder." a boolean?". is_bool($holder)."<br/>";
echo '<hr/>';
echo 'original variable type of $undecided: ';
echo gettype($undecided);
?>
operation result:
- The lab would like to say is the data type. "The is_ data type (variable)" This function is used to determine the data type, returns 1 if true, should no longer display the value of the false.
- GetType (variable) This is the return data type
- setType (variable, "Data type"), or "(data type) variable" are cast.
eg：
<?php
$a = 3.14;
settype($a, "int"); // 法一
echo $a."<br/>";
$a = 3.14;
echo (int)$a; //法二
?>
operation result:
Lab1.4 - Operators
<?php
// put your code here
$firstname = "John";
$lastname = "Smith";
$fullname = $firstname ." " . $lastname;
echo $fullname . "<br/>";
$a = 10;
$b = 3;
$c = $a + $b;
echo $c." = ".$a." + ".$b."<br/>";
$c = $a - $b;
echo $c." = ".$a." - ".$b."<br/>";
$c = $a * $b;
echo $c." = ".$a." * ".$b."<br/>";
$c = $a / $b;
echo $c." = ".$a." / ".$b."<br/>";
$c = $a % $b;
echo $c." = ".$a." % ".$b."<br/>";
$a++;
$b--;
echo '$a is '.$a.' after increment <br/>';
echo '$b is '.$b.' after decrement <br/>';
$c = $a > $b;
echo $c."<br/>";
$c = $a < $b;
echo $c."<br/>";
$c = $a == $b;
echo $c."<br/>";
$c = $a === $b;
echo $c."<br/>";
$c = $a <= $b;
echo $c."<br/>";
$c = $a >= $b;
echo $c."<br/>";
$a = true;
$b = false;
$c = $a || $b ;
echo $c."<br/>";
$c = $a && $b ;
echo $c."<br/>";
?>
operation result:
- In PHP echo a Boolean variable is false does not actually display 0, drunk.
- === it is absolutely equal, not only requires equal values, even value have the same type, such as:
- ! == is not identical to, if the values are the same but different data types is true, for example:
A = $ '2';
$ B = 2;
! $ A $ = B is wrong, because the data type is not the same
! $ a == $ b is, because this is not exactly in line with equal
Lab1.5 - Progress Activity
<?php
// put your code here
$ID = 1824100075;
$Given_name = "haohua";
$Family_name = "Wang";
$Enrolled = true;
$code = "VDIT";
$code_name = " Diploma of Information Technology";
$unit = "VIT1204";
$point = 12.00;
$cost = 2048.00;
echo "Student ID : $ID <br/>";
echo "Given Name: $Given_name <br/>";
echo "Family Name: $Family_name <br/>";
if ($Enrolled){
echo 'Enrolled: Yes <br/>';
} else {
echo 'Enrolled: NO <br/>';
}
echo "Course Code: $code <br/>";
echo "Course Name: $code_name <br/>";
echo "Unit of Study: $unit <br/>";
echo "Credit points: ";
printf("%.2f",$point);
echo '<br/>';
echo "Total Cost: $";
printf("%.2f",$cost);
echo '<br/>';
echo 'Cost per credit point: $';
$ans = sprintf("%.2f",$cost/$point);
echo $ans;
operation result:
- printf ( "format", variable) This function can be controlled formatted output.
- sprintf ( "format", variable) This function returns the value to the variable transmission format.
