ESP8266 is cost effective end point transceiver for your embedded application which facilitates you IOT application to connect with server side interface using HTTP protocol. To control any IOT / Embedded application you can connect ESP8266 Wifi Module with your micro controller which sends and receives instructions through Internet and on behalf of communication micro controller can decide output and act accordingly.
ESP8266 contains 8 pins as mentioned below.
Php operators and expressions
Php operators are punctuation symbols that process operands and produce corresponding values, While a snippet contains operands along with some operators is known as php expression. A php expression may contains variables and some constants.
Mainly php has six types of operator are as follows
Php String is a sequence of character with a sensible meaning. In any programming language string manipulation and string handling has a wide role. In case of php all the output comes after php execution are in the form of string hence string handling in php is a most important concept in php programming.
Php string can be used in following types.
To print a string at a php generated page echo is a most largely used construct, Because of echo is an language construct so that parentheses are also not required. Echo can be used with single quotes and echo with double quotes. More
