Phpdocs

No Category Code Examples Test Code Web Link Remarks
 1 check what browser the user is accessing your web server 0
 2 closing tag ?> can be omitted
 3 Three types of comments
 4 4 scalar types "; // 2. integer: $anInt = 8; echo "anInt == " . $anInt . "
"; // 3. float: $aFloat = 3.14159; echo "aFloat scalar == " . $aFloat . "
"; // 4. string: $aString = "Hello World"; echo "aString scalar == " . $aString . "
";
 5 2 compound types "bar", 12 => true); echo "arr[foo] == " . $arr["foo"] . "
"; // bar echo "arr[12] == " . $arr[12] . "
"; // 1 print_r($arr); // 2. object type: class foo { function do_foo() { echo "Doing foo.
"; } } $bar = new foo; $bar->do_foo(); print_r($bar); print("
"); var_dump($bar);
 6 2 special types
 7 some pseudo-types (mixed) "; } echo "
"; // str_replace() will accept strings and arrays. // Provides: $bodytag = str_replace("%body%", "black", "body text='%body%'>"); echo $bodytag . "

"; // Provides: Hll Wrld f PHP $vowels = array("a", "e", "i", "o", "u", "A", "E", "I", "O", "U"); $onlyconsonants = str_replace($vowels, "", "Hello World of PHP"); print_r($onlyconsonants); echo "

"; // Provides: You should eat pizza, beer, and ice cream every day $phrase = "You should eat fruits, vegetables, and fiber every day."; $healthy = array("fruits", "vegetables", "fiber"); $yummy = array("pizza", "meat", "ice cream"); $newphrase = str_replace($healthy, $yummy, $phrase); print($newphrase);
 8 some pseudo-types for readability reasons http://www.php.net/manual/en/language.pseudo-types
 9 type check "; // prints out: boolean echo gettype($a_str) . "
"; // prints out: string // If this is an integer, increment it by four if (is_int($an_int)) { $an_int += 4; echo $an_int; } echo "
"; // If $a_bool is a bool, print it out // (does not print out anything) if (is_bool($a_bool)) { echo "Boolean: $a_bool"; }
 10 boolean http://www.php.net/manual/en/language.types.boolean.php
 11 integers http://www.php.net/manual/en/language.types.integer.php
 12 Floating point numbers http://www.php.net/manual/en/language.types.float.php
 13 Strings
'; $str = <<"; /* More complex example, with variables. */ class foo { var $foo; var $bar; function foo() { $this->foo = 'Foo'; $this->bar = array('Bar1', 'Bar2', 'Bar3'); } } $foo = new foo(); $name = 'MyName'; echo <<foo. Now, I am printing some {$foo->bar[1]}. This should print a capital 'A': \x41 EOT; 		http://www.php.net/manual/en/language.types.string.php
 14 String Operators "; echo $b . "
"; $anInt = 12; echo strval($anInt); 		http://www.php.net/manual/en/language.operators.string.php
 15 String Functions - 1. addcslashes -- Quote string with slashes in a C style http://www.php.net/manual/en/function.addcslashes.php
 16 String Functions - 2. addslashes -- Quote string with slashes http://www.php.net/manual/en/function.addslashes.php
 17 String Functions - 3. bin2hex -- Convert binary data into hexadecimal representation "; echo hex2bin('48656c6c6f'); // result: Hello http://www.php.net/manual/en/function.bin2hex.php
 18 String Functions - 4. chop -- Alias of rtrim() "; echo strlen(chop("Hello \n")) . "
"; echo strlen(rtrim("Hello \t")) . "
"; 		http://www.php.net/manual/en/function.chop.php
 19 String Functions - 5. chr -- Return a specific character '; } echo "•"; # bullet • echo "–"; # en dash echo "—"; # em dash echo "™"; # trademark echo "©"; # copyright mark echo "®"; # registration mark http://www.php.net/manual/en/function.chr.php
 20 String Functions - 6. chunk_split -- Split a string into smaller chunks http://www.php.net/manual/en/function.chunk-split.php
 21 String Functions - 7. convert_cyr_string -- Convert from one Cyrillic character set to another http://www.php.net/manual/en/function.convert-cyr-string.php
 22 String Functions - 8. convert_uudecode -- Decode a uuencoded string http://www.php.net/manual/en/function.convert-uudecode.php
 23 String Functions - 9. convert_uuencode -- Uuencode a string http://www.php.net/manual/en/function.convert-uuencode.php
 24 String Functions - 10. count_chars -- Return information about characters used in a string $val) { echo "There were $val instance(s) of \"" , chr($i) , "\" in the string.\n"; } print_r(count_chars($data, 1)); echo ord('T'); echo chr(84); http://www.php.net/manual/en/function.count-chars.php
 25 String Functions - 11. crc32 Calculates the crc32 polynomial of a string http://www.php.net/manual/en/function.crc32.php
 26 String Functions - 12. crypt One-way string hashing "; } echo $password; http://www.php.net/manual/en/function.crypt.php
 27 String Functions - 13. echo Output one or more strings http://www.php.net/manual/en/function.echo.php
 28 String Functions - 14. explode Split a string by string http://www.php.net/manual/en/function.explode.php
 29 String Functions - 15. fprintf Write a formatted string to a stream http://www.php.net/manual/en/function.fprintf.php
 30 String Functions - 16. get_html_translation_table — Returns the translation table used by htmlspecialchars() and htmlentities() & Krämer"; $encoded = strtr($str, $trans); echo $encoded; // this did not work -- jli http://www.php.net/manual/en/function.get-html-translation-table.php
 31 String Functions - 17. hebrev Convert logical Hebrew text to visual text http://www.php.net/manual/en/function.hebrev.php
 32 String Functions - 18. hebrevc Convert logical Hebrew text to visual text with newline conversion http://www.php.net/manual/en/function.hebrevc.php
 33 String Functions - 19. hex2bin Converts the hex representation of data to binary http://www.php.net/manual/en/function.hex2bin.php
 34 String Functions - 20. html_entity_decode Convert all HTML entities to their applicable characters dog now\n"; $a = htmlentities($orig); $b = html_entity_decode($a); echo $a; // I'll "walk" the <b>dog</b> now echo $b; // I'll "walk" the dog now http://www.php.net/manual/en/function.html-entity-decode.php
 35 String Functions - 21. htmlentities Convert all applicable characters to HTML entities bold"; // Outputs: A 'quote' is <b>bold</b> echo htmlentities($str); // Outputs: A 'quote' is <b>bold</b> echo htmlentities($str, ENT_QUOTES); // this does not really work -- jli http://www.php.net/manual/en/function.htmlentities.php
 36 String Functions - 22. htmlspecialchars_decode Convert special HTML entities back to characters this -> "

'; echo htmlspecialchars_decode($str); 		http://www.php.net/manual/en/function.htmlspecialchars-decode.php
 37 String Functions - 23. htmlspecialchars Convert special characters to HTML entities Test"); echo $new; // <a href='test'>Test</a> http://www.php.net/manual/en/function.htmlspecialchars.php
 38 String Functions - 24. implode Join array elements with a string "; // lastname,email,phone // Empty string when using an empty array: var_dump(implode('hello', array())); // string(0) "" http://www.php.net/manual/en/function.implode.php
 39 String Functions - 25. join Alias of implode() http://www.php.net/manual/en/function.join.php
 40 String Functions - 26. lcfirst Make a string's first character lowercase "; echo $bar, "
";		 http://www.php.net/manual/en/function.lcfirst.php
 41 String Functions - 27. levenshtein Calculate Levenshtein distance between two strings http://www.php.net/manual/en/function.levenshtein.php
 42 String Functions - 28. localeconv Get numeric formatting information http://www.php.net/manual/en/function.localeconv.php
 43 String Functions - 29. ltrim Strip whitespace (or other characters) from the beginning of a string http://www.php.net/manual/en/function.ltrim.php
 44 String Functions - 30. md5_file Calculates the md5 hash of a given file http://www.php.net/manual/en/function.md5-file.php
 45 String Functions - 30. md5_file Calculates the md5 hash of a given file http://www.php.net/manual/en/function.md5-file.php
 46 PHP New Version Reference 1) string gettype ( mixed $var ); // return variable type 2) /* associative array */ $row = $result->fetch_array(MYSQLI_ASSOC); printf ("%s (%s)\n", $row["Name"], $row["CountryCode"]); 3) if(!isset($_SESSION['username'])){ // go to login page code here. // in login page, store data into session, use following: $_SESSION['username']="username"; } else{ $username=$_SESSION['username'];// get previous session and go your project page } session_register() function has been deprecated since PHP5.3
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