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Error Identifiers: possiblyImpure.*

There are 20 error identifiers in the possiblyImpure.* group:

• possiblyImpure.betweenPhpTags
  Pure function contains inline HTML output between PHP tags.
• possiblyImpure.die
  Pure function possibly uses die which terminates the script.
• possiblyImpure.echo
  Pure function contains an echo statement which is a side effect.
• possiblyImpure.eval
  Pure function possibly uses eval which can have arbitrary side effects.
• possiblyImpure.exit
  Pure function possibly uses exit which terminates the script.
• possiblyImpure.functionCall
  Pure function calls another function or callable whose purity is unknown.
• possiblyImpure.global
  Pure function possibly accesses mutable global state via the global keyword.
• possiblyImpure.include
  Pure function uses include which can execute arbitrary code.
• possiblyImpure.methodCall
  Pure function calls a method whose purity is unknown.
• possiblyImpure.new
  Pure function instantiates a class whose constructor purity is unknown.
• possiblyImpure.print
  Pure function contains a print statement which is a side effect.
• possiblyImpure.propertyAssign
  Pure function possibly assigns a value to an object property.
• possiblyImpure.propertyAssignByRef
  Pure function creates a by-reference assignment to a property.
• possiblyImpure.propertyUnset
  Pure function unsets a property which modifies object state.
• possiblyImpure.require
  Pure function uses require which can execute arbitrary code.
• possiblyImpure.static
  Pure function uses a static variable which persists mutable state.
• possiblyImpure.staticPropertyAccess
  Pure function accesses a static property which is shared mutable state.
• possiblyImpure.superglobal
  Pure function or method accesses a superglobal variable.
• possiblyImpure.yield
  Pure function or method uses yield, which is a stateful operation.
• possiblyImpure.yieldFrom
  Pure function or method uses yield from, which is a stateful operation.