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Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 13 |
1 files changed, 3 insertions, 10 deletions
@@ -14,16 +14,10 @@ A simple math expressions calculator * Easily extendable ## Install via Composer: -Stable branch ``` composer require "nxp/math-executor" ``` -Dev branch (currently unsupported) -``` -composer require "nxp/math-executor" "dev-dev" -``` - ## Sample usage: ```php require "vendor/autoload.php"; @@ -133,7 +127,7 @@ $executor->setVars([ echo $executor->execute("$var1 + $var2"); ``` ## Division By Zero Support: -By default, the result of division by zero is zero and no error is generated. You have the option to thow a \NXP\Exception\DivisionByZeroException by calling setDivisionByZeroException. +By default, the result of division by zero is zero and no error is generated. You have the option to throw a `\NXP\Exception\DivisionByZeroException` by calling `setDivisionByZeroException`. ```php $executor->setDivisionByZeroException(); @@ -145,7 +139,7 @@ try { ``` ## Unary Minus Operator: -Negative numbers are supported via the unary minus operator, but need to have a space before the minus sign. `-1+ -3` is legal, while '`-1+-3` will produce an error due to the way the parser works. Positive numbers are not explicitly supported as unsigned numbers are assumed positive. +Negative numbers are supported via the unary minus operator, but need to have a space before the minus sign. `-1+ -3` is legal, while `-1+-3` will produce an error due to the way the parser works. Positive numbers are not explicitly supported as unsigned numbers are assumed positive. ## String Support: Expressions can contain double or single quoted strings that are evaluated the same way as PHP evalutes strings as numbers. You can also pass strings to functions. @@ -162,5 +156,4 @@ You can add operators, functions and variables with the public methods in MathEx This will allow you to remove functions and operators if needed, or implement different types more simply. -Also note that you can replace an existing default operator by adding a new operator with the same regular expression string. For example if you just need to redefine TokenPlus, you can just add a new operator with the same regex string, in this case '\+'. - +Also note that you can replace an existing default operator by adding a new operator with the same regular expression string. For example if you just need to redefine TokenPlus, you can just add a new operator with the same regex string, in this case '\\+'. |