PHP Functions.pptx - PHP Functions Week 11 What is a...

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PHP: Functions Week 11
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What is a Function A function is a small unit of program that does the following Takes an input in the form of parameters Does some processing May return a value
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What is a Function continued A function is a block of statements that can be used repeatedly in a program It doesn’t execute immediately when the program is opened and will only execute when it has been called
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Function Syntax Function parameters are declared after the function name
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Example
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What type of functions are there? ( 1)Built in Functions PHP has > 1000 built in functions http://php.net/manual/en/indexes.functions .php To access the function – you need to call it
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Built in Function Example
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Return part of a string continued..
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What type of functions are there? (2 ) User created Functions
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