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Final review -php learning notes 2-php language foundation

2022-06-30 07:47:00 【Feng..】

Constant

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Predefined Constants

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Custom constant

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Detect whether constants have been defined

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Variable

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The assignment of a variable

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Scope of variable

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Volatile variables

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PHP data type

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Data type detection

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PHP Operator

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String operators

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Assignment operator

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Increment decrement operator

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Comparison operator

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Logical operators

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Conditional operator

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Operator precedence

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Conversion of data types

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