The PHP machine-readable text Preprocessor (PHP) is a programing language that enables web developers to form dynamic content that interacts with databases. PHP is essentially used for developing internet based totally code applications.
Common uses of PHP
PHP performs system functions, i.e. from files on a system it'll turn out, open, read, write, and shut them.
PHP will handle forms, i.e. gather information from files, save information to a file, through email you'll send information, come information to the user.
- You add, delete, modify parts among your info through PHP.
- Access cookies variables and set cookies.
- Using PHP, you'll prohibit users to access some pages of your web site.
- It will encode information.
Characteristics of PHP
Five vital characteristics create PHP's sensible nature potential −
- Simplicity
- Efficiency
- Security
- Flexibility
- Familiarity
PHP - Operator varieties
- Arithmetic Operators
- Comparison Operators
- Logical (or Relational) Operators
- Assignment Operators
- Conditional (or ternary) Operators
PHP - Loop types
Loops in PHP are wont to execute a similar block of code a given range of times. PHP supports following four loop varieties.
for − loops through a block of code a mere range of times.
while − loops through a block of code if and as long as a mere condition is true.
do...while − loops through a block of code once, so repeats the loop as long as a special condition is true.
foreach − loops through a block of code for every component in associate degree array.
PHP - Arrays
An array is a arrangement that stores one or additional similar form of worths in an exceedingly single value. {for example|for instance|as associate degree example} if you wish to store one hundred numbers then rather thanshaping one hundred variables its simple to outline an array of one hundred length.
There are 3 totally different reasonably arrays and every array worth is accessed mistreatment associate degree ID c that is termed array index.
Numeric array − associate degree array with a numeric index. Values are hold on and accessed in linear fashion.
Associative array − associate degree array with strings as index. This stores component values in association with key values instead of in a strict linear index order.
Multidimensional array − associate degree array containing one or additional arrays and values are accessed mistreatment multiple indices
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