Summary of commonly used functions in PHP

Summary of commonly used functions in php

String interception:

1. substr('String to be intercepted', 'Start from the number of characters', 'To the number of characters End');字 // Tie the string with a certain character into an array

Substr ($ cut [0], 'Start from the characters', 'to the end of the characters'); ; U ... $ $ substr ($ cut [n], 'Start from the first characters', 'to the end of the characters ends');

String length:

1. strlen('string');

* Calculate the string Length

​​​ Array and string conversion:

1. explode('A character in the string to be intercepted', 'String to be intercepted');

2.implode('array');

1. round('Floating point number' ; 2. ceil( 'Floating point number'); // Round up as long as there are digits after the decimal point

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The above has introduced a summary of commonly used functions in PHP, including relevant aspects. I hope it will be helpful to friends who are interested in PHP tutorials.