Array,Array Function,Get Method,Post Method
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An array is a special variable that can hold multiple values. There are two main types of arrays: numeric and associative. Numeric arrays use integers as indexes and associate arrays use named keys. Functions like in_array(), is_array(), implode(), and explode() allow you to check/manipulate arrays. The GET and POST methods are used to submit form data, with GET appending values to the URL and POST sending values via HTTP headers.
![What is array?
?An array is a special variable, which can hold more
than one value at a time.
Syntax:
array(¡°string¡±,¡±string¡±,¡±string¡±);
Example:
$a=array(¡°hello¡±,¡±world¡±);
echo $a[0];
echo $a[1];](https://image.slidesharecdn.com/arrayvariable-151026045511-lva1-app6892/85/Array-Array-Function-Get-Method-Post-Method-1-320.jpg)
![? Numeric array is used for numeric value.
? The index can be assigned automatically
(index always starts at 0), like this:
Syntax:
$array[0];
$array[1];](https://image.slidesharecdn.com/arrayvariable-151026045511-lva1-app6892/85/Array-Array-Function-Get-Method-Post-Method-3-320.jpg)
![? Associative arrays are arrays that use named keys that you
assign to them.
Syntax:
array(¡°practical"=>¡°value", ¡°name keys"=>¡°value",
¡°name keys"=>¡°value");
Example
$a=array(¡°practical¡±=>¡±hello¡±,¡±practical1¡±=>¡±world¡±);
echo $a[¡°practical¡±];
echo $a[¡°practical1¡±];](https://image.slidesharecdn.com/arrayvariable-151026045511-lva1-app6892/85/Array-Array-Function-Get-Method-Post-Method-4-320.jpg)
![Explode is used for convert string to array.
Syntax:
explode(¡°first parameter¡±,variablename);
<?Php
$d="hello how are you";
$e=explode(" ",$d);
Echo $e[0];
Echo $e[1];
?>](https://image.slidesharecdn.com/arrayvariable-151026045511-lva1-app6892/85/Array-Array-Function-Get-Method-Post-Method-11-320.jpg)
Array,Array Function,Get Method,Post Method
- 1. What is array? ?An array is a special variable, which can hold more than one value at a time. Syntax: array(¡°string¡±,¡±string¡±,¡±string¡±); Example: $a=array(¡°hello¡±,¡±world¡±); echo $a[0]; echo $a[1];
- 3. ? Numeric array is used for numeric value. ? The index can be assigned automatically (index always starts at 0), like this: Syntax: $array[0]; $array[1];
- 4. ? Associative arrays are arrays that use named keys that you assign to them. Syntax: array(¡°practical"=>¡°value", ¡°name keys"=>¡°value", ¡°name keys"=>¡°value"); Example $a=array(¡°practical¡±=>¡±hello¡±,¡±practical1¡±=>¡±world¡±); echo $a[¡°practical¡±]; echo $a[¡°practical1¡±];
- 6. In_array is used for check the string is available or not in our array. Syntax. in_array(string name,variable name);
- 8. Is_array is used for check our array is array or not. Syntax: is_array(variable name);
- 9. <?php $b="hello world"; if(is_array($b)) { echo "true"."<br>"; } else { echo "false"."<br>"; } ?>
- 10. Implode is used for convert array to string. Syntax: implode(variable name); Example: <?php $c=array("hello","how","are","you"); echo implode(" ",$c)."<br>"; ?>
- 11. Explode is used for convert string to array. Syntax: explode(¡°first parameter¡±,variablename); <?Php $d="hello how are you"; $e=explode(" ",$d); Echo $e[0]; Echo $e[1]; ?>
- 12. Get : used for get a value from form. <form action=¡°¡± method="GET"> Name: <input type="text" name="name" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> Output: http://www.test.com/index.html?name1=valu e1&name2=value2
- 13. Post : used for get a value from form. <form action=¡°¡± method=¡°post"> Name: <input type="text" name="name" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> Output: http://www.test.com/index.html