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Annotation symbol:// Single-line annotation /* */Multiple-line annotation' ' Single quotation marks, simple strings, taken directly without any processing; " "Double quotation marks, PHP dynamic processing and output, generally used to process $ Variables. Boolean variables: One is true, which is true; the other is false, which is false. Common variables: string string (numbers\Chinese characters\etc.) integer integer (1, 2, 3, 4, 5, 0, -1, -2, etc.) double floating point number (decimal point) array array object The methods that can be used on the object are gettype($mix) and settype($mix,$typename); Commonly used symbol escapes: \" double quotes\\ backslash\n newline\r return to the beginning of the line\t Horizontal tabulation operation symbols: + addition operation - subtraction operation* multiplication operation/division operation % take the remainder++ add 1 to yourself -- Decrement by 1. Connect two string assignment operations: = Substitute the value on the right into the left += Put
1. Special operation symbols and functions commonly used in PHP development
Introduction: Annotation symbol://single-line annotation multi-line annotation quotation marks'' single quotation mark, simple string , take it directly without any processing;
2. Summary of common special operation symbols and functions in php
Introduction: Annotation symbols: // Single-line annotation Use of quotation marks for multi-line annotation ' ' Single quotation marks, simple strings, taken directly without any processing; " "Double quotation marks , PHP dynamic processing and then output, generally used to process $ variables.
3. Special operation symbols and functions commonly used in PHP
Introduction: The more commonly used special operation symbols and functions in PHP
Introduction: Summary of commonly used special operation symbols and functions in PHP (a must-read for beginners in PHP). Annotation symbols: // Use of quotation marks for single-line comments and multi-line comments ' ' Single quotes, simple strings, taken directly without any processing; " "Double quotes, PHP dynamically processes and outputs, generally used to process
Introduction: Summary of commonly used special operation symbols and functions in PHP (a must-read for newbies to PHP) Annotation symbols: // The use of quotation marks for single-line comments and multi-line comments' ' Single quotation marks, simple strings, are taken directly without any processing; " "Double quotation marks, PHP dynamically processes and then outputs them, generally used for processing
Introduction: Newbies often have problems with some PHP special symbols , here is a summary of commonly used special symbols. If you can use them all, just think of it as a refresher.
##7. Summary of commonly used special operation symbols and functions in PHP (php newbies) A must-read for getting started)_php tips
Introduction: Newbies often have problems with some PHP special symbols. Here is a list of commonly used special symbols. If you can use them all, then think of it as reviewing the past and learning the new
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