Kata Kunci PHP

Kata kunci ialah perkataan yang mempunyai beberapa makna. Dalam penggunaan biasa bahasa PHP, perkataan ini tidak boleh digunakan sebagai pemalar, nama pembolehubah, nama kaedah, nama kelas, dll. Kata kunci ini apabila digunakan secara automatik difahami oleh PHP. Kata kunci PHP ini, apabila digunakan dengan nama pembolehubah, boleh dikelirukan dengan kata kunci sebenar. Oleh itu, kata kunci ini tidak boleh digunakan sebagai nama pembolehubah.

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Senarai semua kata kunci PHP

Berikut ialah senarai:

Kata kunci: abstrak

Kod:

'.$this->MethodOne(); } } class ProgramOne extends Program { protected function MethodOne() { echo '
'.'In MethodOne'; } } $objOne = new ProgramOne; $objOne->display(); ?>,

Output:

Kata kunci: dan

Kod :

Output:

Kata kunci: array()

Kod:

 "east", "w" => "west", "n" => "north", "s" => "south"); print_r($directions); ?>

Output:

Kata kunci: sebagai

Kod:

 "east", "w" => "west", "n" => "north", "s" => "south"); foreach($directions as $key=>$value) { echo '
'. $key. '=>'.$value; } ?>

Output:

Kata kunci: putus

Kod :

$value) { if($value == 'try') { break ; // can use break 1 also } echo '
'.$value; } ?>

Output:

Kata kunci: kes

Kod:

"."One"; break; case 2: echo "
"."Two"; break; case 3: echo "
"."Three"; break; default: echo "
"."Default"; } $i++; } ?>

Output:

Kata kunci: tangkap

Kod:

getMessage()); } } Operation(); ?>

Output:

Kata kunci: kelas

Kod:

str; } } $obj = new ClassOne; $obj->displayMethod(); ?>

Output:

Kata kunci: const

kata kunci const digunakan untuk mentakrifkan nama dengan nilai menggunakan operator tugasan seperti di bawah

UMUR konst= 29;

Tiada tanda $ pada permulaan nama tetap seperti pembolehubah biasa.

Kata kunci: lalai

Kod:

Output :

Kata kunci: lakukan

Kod:

 2) { echo 'x is greater than 2'; } else{ echo 'x is less than 2'; } } while ($x < 2); ?>

Output:

Kata kunci: die();

Kod :

Output:

Kata kunci: gema

Kod:

Output:

Kata kunci: lain

Kod:

 5) { echo "a is greater than 10"; } else { echo "a is not greater than 10"; } ?>

Output:

Kata kunci: elseif

Kod:

 10) { echo "a is greater than 10"; } elseif ($a == 10) { echo "a is equal to 10"; } else { echo "a is smaller than 10"; } ?>

Output :

Kata kunci: kosong

Kod:

Output:

Kata kunci: endfor

Kod:

".$i; endfor; ?>

Output:

Kata kunci: endif

Kod :

 10): echo "a is greater than 10"; elseif ($a >10) : echo "a is equal to 10"; else: echo "a is not equal to 10"; endif; ?>

Output:

Kata kunci: endforeach

Kod:

$value): echo '
'.$value; endforeach; ?>

Output:

Kata kunci: suis hujung

Kod:

Output:

Kata kunci: endwhile

Kod:

".$i; $i++; endwhile; ?>

Output:

Keyword: eval()

Code:

".$string; eval("\$string = \"$string\";"); echo "
".$string; ?>

Output:

Keyword: exit()

This keyword when encountered in a script, terminates the execution of the script.

Keyword: extends()

Code:

string; } } class ExtendClass extends ParentClass { public function display() { echo 'Hello World!'; } } $obj1 = new ExtendClass; $obj1->display(); ?>

Output:

Keyword: final

Code:

string; } } class ExtendClass extends ParentClass { public function display() { echo 'Hello World!'; } } $obj1 = new ExtendClass; $obj1->display(); ?>

Output :

Keyword: catch

Code:

'.$e->getMessage(); } ?>

Output:

Keyword: for

Code:

'.$i; } ?>

Output :

Keyword: foreach

Code:

'.$value/10; } ?>

Output:

Keyword: function()

Code:

 The sum : '.$result; ?>

Output:

Keyword 34: global

Code:

Output:

Keyword: if

Code:

Output:

Keyword: implements

Code:

first(); ?>

Output :

Keyword: include

Code:

file.php

index.php

Keyword : include_once

Code:

file.php

index.php

Output:

Keyword: instanceOf

Code:

Output:

Keyword: Interface

Code:

 This is the one function'; } public function two() { echo '
 This is the two function'; } } $obj = new MainClass; echo $obj->one(); echo $obj->two(); ?>

Output:

Keyword: isset

Code:

Output :

Keyword: list

Code:

Output:

Keyword: new

Code:

score('Sunil','Maths',90); ?>

Output:

Keyword: or

Code:

Output :

Keyword: print

Code:

"."Hello $stringOne $stringTwo"; ?>

Output :

Keyword: private

Code:

str. ' Method'; } } $obj = new MainClass(); $obj->PrivateMethod(); //Shows Private Method ?>

Output:

Keyword: public

Code:

str. ' Method'; } } $obj = new MainClass(); $obj->PublicMethod(); //Shows Public Method ?>

Output:

Keyword: protected

Code:

str. ' Method'; } } $obj = new MainClass(); $obj->ProtectedMethod(); //Shows Protected Method ?>

Output:

Keyword: return

Code:

Output:

Keyword: switch

Code:

"."One"; break; case 2: echo "
"."Two"; break; case 3: echo "
"."Three"; break; default: echo "
"."Default"; } ?>

Output:

Keyword: throw

Code:

'.$e->getMessage(); } } division(10,0); ?>

Output:

Keyword: Try

Code:

'.$e->getMessage(); } ?>

Output:

Keyword: unset

Code:

'; $a = 10; echo $a; unset($a); // echo $a; //this line when uncommented shows error : Undefined variable, as the variable is unset ?>

Output:

Keyword: var

Code:

str; } } $obj = new MainClass; $obj->displayMsg(); ?>

Output:

Keyword: while

Code:

'. $i; $i++; } ?>

Output:

Conclusion

In this article, you will learn about keywords in PHP with examples. These examples explain the usage of each of the keyword in PHP.

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