Escape Sequence in PHP "\" : 5th Day Lecture of PHP

Escape Sequence in PHP "\"

Sample 1 : What is Escape Sequence?

Escape Sequence is the combination of escape symbol "\" and a letter coming after it.
Escape character "\" is used to show double quotes, dollar sign, single quote, back slash, curly brackets, or other brackets.
It works within double quotes. "" only.

Sample 2 : Types of Escape Sequences

I am going to describe 8 types of Escape Sequence

1. \" = It is used to show a certain value within double quotes like "Sami"
2. \" = It is used to show a certain value within single quote like \'Sami\'
3. \n = It is used to transfer remaining characters in new line like Samee Ullah
   Feroz
4. \t = It is used to add 3 spaces within two words or characters like Samee Ullah Feroz
5. \r = It is used for courage Return like Samee Ullah Feroz
6. \$ = It is used to show dollar sign as not the part of variable. like 1000 $
7. \ = It is used to print a tractor as back slash not as escape character. like \Sami

Sample 3 : Example of \n , \t, \r Sequences.

Getting Error, I'll Resolve it tomorrow.Samee Ullah Feroz
Samee Ullah Feroz
Samee Ullah Feroz

---

 <html>  
      <head>  
           <title>Escape Sequence in PHP: 5th Day Lecture of PHP</title>  
      </head>  
      <body>  
           <h1 align="center">Escape Sequence in PHP "\"</h1>  
                <h2 align="left">Sample 1 : What is Escape Sequence?</h2>  
                     <!-- Brief Description of Escape Character-->  
                     <?php  
                          echo 'Escape Sequence is the combination of escape symbol "\" and a letter coming after it. <br />';  
                          echo 'Escape character "\" is used to show double quotes, dollar sign, single quote, back slash, curly brackets, or other brackets. <br />';  
                          echo 'It works within double quotes. "" only. <br />';  
                     ?>  
                <h2 align="left">Sample 2 : Types of Escape Sequences</h2>  
                     <?php   
                          echo '<b>I am going to describe 8 types of Escape Sequence </b> <br />';  
                          echo  
                               " <ol>  
                                    <li>\\\" = It is used to show a certain value within double quotes like \"Sami\"</li>  
                                    <li>\\\" = It is used to show a certain value within single quote like \'Sami\'</li>  
                                    <li>\\n = It is used to transfer remaining characters in new line like Samee Ullah<br/>Feroz</li>  
                                    <li>\\t = It is used to add 3 spaces within two words or characters like Samee Ullah Feroz</li>  
                                    <li>\\r = It is used for courage Return like Samee Ullah \rFeroz</li>  
                                    <li>\\\$ = It is used to show dollar sign as not the part of variable. like 1000 \$</li>  
                                    <li>\\ = It is used to print a tractor as back slash not as escape character. like \\Sami</li>  
                               </ol> ";  
                     ?>  
                <h2 align="left">Sample 3 : Example of \n , \t, \r Sequences.</h2>  
                     <?php  
                          echo "Getting Error, I'll Resolve it tomorrow.";  
                          $name1="Samee";  
                          $name2="Ullah";  
                          $name3="Feroz";  
                          echo "$name1 $name2\n$name3 <br />"; //Error Here Sequence is not working.  
                          echo "$name1 $name2\t$name3 <br />";  
                          echo "$name1 $name2\r$name3";  
                     ?>  
      </body>  
 </html>   

Posted by Samee Ullah Feroz 11:15 PM 0 comments

Boolean, Arrays, null value in PHP Brief Description : 4th Day Lecture

Boolean, Arrays, null value in PHP Brief Description

Sample 1 : PHP Booleans Brief Description

Boolean can be either TRUE or False. i.e.
$x=true
$y=false
Simple Code to show of Boolean rule:
my name is "Noor"

Sample 2 : PHP Arrays Brief Description

An array is used to store multiple values in a single Variable.
Arrays are useful when you want to store a group of data.

array (size=3)
  0 => string 'sameeullahferoz' (length=15)
  1 => int 22
  2 => float 5.3

specific datatype in array.
My Height is 5.3

Sample 3 : null Values Variable in PHP

null

samee

---

 <html>  
      <head>  
           <title>Boolean, Arrays, null value Brief Description : 4th Day Lecture of PHP</title>  
      </head>  
      <body>  
           <h1 align="center">Boolean, Arrays, null value in PHP Brief Description</h1>  
                <h2 align="left">Sample 1 : PHP Boolean Brief Description</h2>  
                     <?php  
                          echo "Booleans can be either TRUE or False. i.e. <br />";  
                          echo '$x=true <br />';  
                          echo '$y=false <br />';  
                     ?>  
                     <?php echo "Simple Code to show of Boolean rule: <br />" ?>  
                     <?php  
                          $istrue = false;  
                          if($istrue)  
                               {  
                          echo "my name is \"Samee\"";  
                               } // if $istrue variable was true, then it will be run. otherwise never.  
                          else  
                               {  
                          echo "my name is \"Noor\""; #backslash is used to give output of double quotes.  
                               }  
                     ?>  
                <h2 align="left">Sample 2 : PHP Arrays Brief Description</h2>  
                     <?php  
                          echo "An array is used to store multiple values in a single Variable. <br />";  
                     ?>  
                          <!-- An Example of PHP Arrays -->
    <?php
     $bio=array("sameeullahferoz",22,5.3); //it is round braces not square bracket. 
     //In Array values are counted as 0, 1, 2, like it.
     var_dump($bio); //to show the types and values of arrays.
     echo "<br />";
     echo "specific datatype in array. <br />";
     echo "My Height is {$bio[2]}"; //it is used to call value from arrage
    ?>
    
   <h2 align="left">Sample 3 : null Values Variable in PHP</h2>
    <?php
    $name=null;
    var_dump($name);
    
    $name="samee";
    echo $name
    ?>
 </body>
</html> 

---

Posted by Samee Ullah Feroz 2:04 AM 0 comments

Some Important Things of Data Type: 4th Day Lecture of PHP

Some Important Things of Data Type in PHP

Sample 1 : Which is Faster way to print?

My General Name is Samee Ullah Feroz.
My General Company Name is Getacho.

Sample 2 : Rules for Integers

An integer must have at least one digit from 0 to 9.
An Integer cann't contain comma, space or blanks.
And Integer must have not a decimal point.
An Integer can be either positive or negative.
Integers can be specified in three formates:

1. Decimal (10-based)
2. Hexadecimal (16-based-prefixed with 0x)
3. Octal (8-based-prefixed with 0)

Sample 3 : Var_dump variable usage

var_dump is a variable to show the integer type, value and size.
var_dump also add a break line in output.
var_dump Example:
50

int 50

float 100.5

string 'values' (length=6)

Sample 4 : Floating Points Numbers

float 10.365

float 2400

float 8.0E-5 

---

 <html>  
      <head>  
           <title>Some Important Things for Data Type: 4th Day Lecture of PHP</title>  
      </head>  
      <body>  
           <h1 align="center">Some Important Things for Data Type in PHP</h1>  
                <h2 align="left">Sample 1 : Which is Faster way to print?</h2>  
                     <?php  
                          echo "My General Name is Samee Ullah Feroz. <br />"; //It is simple form to print data  
                          echo 'My General Company Name is Getacho.' #it is faster way. because in this it just give print command.  
                      ?>  
                <h2 align="left">Sample 2 : Rules for Integers</h2>  
                     <?php  
                          echo "An integer must have at least one digit from 0 to 9. <br />";  
                          echo "An Integer cann't contain comma, space or blanks. <br />";  
                          echo "And Integer must have not a decimal point. <br />";  
                          echo "An Integer can be either positive or negative. <br />";  
                          echo "Integers can be specified in three formates:<br />";  
                          echo  
                               "<ol>  
                                    <li>Decimal (10-based)</li>  
                                    <li>Hexadecimal (16-based-prefixed with 0x)</li>  
                                    <li>Octal (8-based-prefixed with 0)</li>  
                               </ol>"  
                     ?>  
                <h2 align="left">Sample 3 : Var_dump variable usage</h2>  
                     <?php  
                          echo "var_dump is a variable to show the integer type, value and size. <br />";  
                          echo "var_dump also add a break line in output. <br />";  
                          echo "<b>var_dump Example:</b> <br />";  
                          echo  
                               $a=50;  
                               $b=100.50;  
                               $c="values";  
                               var_dump ($a, $b, $c);  
                     ?>  
                <h2 align="left">Sample 4 : Floating Points Numbers</h2>  
                     <?php   
                          $x = 10.365;  
                          var_dump($x);  
                          echo "<br />";   
                          $x = 2.4e3;  
                          var_dump($x);  
                          echo '<br />'; //I used single quote that you can remember its printing rule    
                          $x = 8E-5;  
                          var_dump($x);  
                     ?>  
      </body>  
 </html>   

---

Posted by Samee Ullah Feroz 12:57 AM 0 comments

Static Variable And Its Usage In Function : 3rd Day Lecture of PHP

Static Variable And Its Usage

Sample 1 : What is Static Variable and How to use it?

Static variable is like local variable, but it locates its fake behavior to user.
And One More thing, Once it used, it finished.
Age behavior with every year:
Samee age update: 20
Samee age update: 21
Samee age update: 22

---

 <html>  
      <head>  
           <title>Static Variable And Its Usage In Function : 3rd Day Lecture of PHP</title>  
      </head>  
      <body>  
           <h1 align="center">Statis Variable And Its Usage</h1>  
                <h2 align="left">Sample 1 : What is Static Variable and How to use it?</h2>  
                     <?php echo "Static variable is like local variable, but it locates its fake behavior to user.<br />" ?>  
                     <?php echo "And One More thing, Once it used, it finished. <br />" ?>  
                     <?php  
                          echo "<p>Age behavior with every year:</p>";  
                               function age()  
                               {  
                               static $age = 20;  
                               echo "Samee age update: ". $age . "<br />"; //dot operator should be before and after variable.   
                               $age++;  
                               }  
                               age();  
                               age();  
                               age();  
                     ?>   
      </body>  
 </html>   

Posted by Samee Ullah Feroz 12:06 AM 0 comments

Local Variable, Global Variable Use In Function : 3rd Day Lecture of PHP

Local Variable, Global Variable Use

Sample 1 : Simple Function of Local And Global Variable

This is Big Number: 35
This number is less than Big Number : 15

Sample 2 : Rules of Local And Global Variables

1. We can not use Local Variables outside the function.
2. We can not use Global Variables inside the function Directly.
3. We can use Global Variables inside the function by $GLOBALS['Variable'].
   • But in $GLOBALS['Variable'], you can contain only one single variable.
   • For different Variables you will create separate $GLOBALS['x']
   • In $GLOBALS all spellings are Capital
   • Variable will be written within single quote.
4. As you know; after function completion, local variables will be finished, so you need to keep in mind these rules

Sample 3 : Global Variable Use inside the Function.

What is Your Name And Age?
My Name is Samee
And My Age is 22 And my double age will be 44
Tell me your complete bio data?
My Name is Samee, age is 22, and My height is 5.3.

Sample 4 : Local Variable use Out Side the Function.

Sorry! We can not use Local Variable out side the Function in PHP.

---

   <html>
 <head>
  <title>Local and Global Variables Use In Function : 3rd Day Lecture of PHP</title>
 </head>
 <body>
  <h1 align="center">Local Variable, Global Variable Use</h1>
   <h2 align="left">Sample 1 : Simple Function of Local And Global Variable</h2>
    <?php 
     $a=5;
     $b=10;
     function add()
     {
     $c=15;
     $d=20;
     echo "This is Big Number: " . ($c+$d);
     echo "<br />";
     }
     add();
     
     echo "This number is less than Big Number : ". ($a+$b);
     
     echo "<br />";
    ?>
    
   <h2 align="left">Sample 2 : Rules of Local And Global Variables</h2>
    <?php
    echo 
     '<ol>
      <li>We can not use Local Variables outside the function.</li>
      <li>We can not use Global Variables inside the function Directly.</li>
      <li>We can use Global Variables inside the function by $GLOBALS[\'Variable\'].
       <ul>
       <li>But in $GLOBALS[\'Variable\'], you can contain only one single variable.</li>
       <li>For different Variables you will create separate $GLOBALS[\'x\']</li>
       <li>In $GLOBALS all spellings are Capital</li>
       <li>Variable will be written within single quote.</li>
       </ul></li>
      <li>As you know; after function completion, local variables will be finished, so you need to keep in mind these rules</li>
     </ol>' //backslash operator is used to give output of single quote of double quote in double quote. 
    ?>
    
     <h2 align="left">Sample 3 : Global Variable Use inside the Function.</h2>
    <?php
    $name="Samee";
    $age=22;
    $hight=5.3;
    function msr()
    {
     echo "<b>What is Your Name And Age?</b> <br />";
     echo "My Name is {$GLOBALS['name']}";
     echo "<br />";
     echo " And My Age is " . $GLOBALS['age'] . " And my double age will be " . ($GLOBALS['age']*2) . "<br />";
    }
    msr();
     echo "<b>Tell me your complete bio data?</b> <br />";
     echo "My Name is $name, age is $age, and My height is $height."
    ?>
    
   <h2 align="left">Sample 4 : Local Variable use Out Side the Function.</h2>
    <?php echo "<b>Sorry! We can not use Local Variable out side the Function in PHP.</b>" ?>
 </body>
</html>

Posted by Samee Ullah Feroz 4:38 AM 0 comments

Variable Concept in Functions of PHP : 3rd Day Lecture of PHP

Variable Concept in Functions of PHP

Sample 1 : Types of Variables in Functions

1. Global Variables
2. Local Variables
3. Static Static Variables

Sample 2 : Define a function

My name is Samee_Ullah_Feroz
And my age is 22

   <html>  
     <head>  
       <title>Variable Concept in Functions of PHP : 3rd Day Lecture of PHP</title>  
     </head>  
     <body>  
       <h1 align="center">Variable Concept in Functions of PHP </h1>  
            <h2 align="left">Sample 1 : Types of Variables in Functions</h2>  
              <?php   
                          echo "<ol>  
                                    <li>Global Variables</li>  
                                    <li>Local Variables</li>  
                                    <li>Static Static Variables</li>  
                                    </ol>" // we use list here  
                          ?>  
          <h2 align="left">Sample 2 : Define a function</h2>  
               <?php   
                          $age=22; //It is Global Variable  
                               function bio()  
                                    {       
                                    $name = "Samee_Ullah_Feroz";  
                                    /* 2 Points Are Here  
                                    1) Use under score in the place of space  
                                    2) It is Local Variable  
                                    */  
                                    echo "My name is " . $name;  
                                    echo "<br />";  
                                    } #Local Variables Concept is finished at the end of the function  
                                         bio();  
                          /*It is every important, it is used to call function.   
                          1) Function is Declared  
                          2) then Function is called  
                          3) Variables Inside the function are "Local Variables"  
                          4) Variables out side the function are "Global Variables"  
                          */  
                          echo "And my age is {$age}" #Here I used curly brackets that I can not forget a minor rule of variable.  
                          ?>  
     </body>  
   </html>   

---

Posted by Samee Ullah Feroz 3:34 AM 0 comments