fork(1) download
copy 
  1. <?php
  2.  
  3. $foo = "SOpt";
  4.  
  5. function foo () {
  6.     $var = "foo";
  7.  
  8.     echo $$var, PHP_EOL;
  9. }
  10.  
  11. foo();
Success #stdin #stdout #stderr 0s 82880KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 

	

		
	 
	
		
	
		 stderr
					

				
				 copy
			

			

	

        
PHP Notice:  Undefined variable: foo in /home/FH5jnx/prog.php on line 8


    

	
			

					
			
			
			
			
			
			
			
			

			
			
			
		

	
		
		

			

			                        







			
			

				

	
					
					 https://ideone.com/ztIkmW
					
					
					
					
					

												

												
						
						

					

					
					
					

						
language:

						
PHP (php 7.3.5)

					

					

						
created:
								
						
7 years ago

					

					

						
visibility:

						

														 secret																					
							
							

								
							

						

					

										
										

					
					 Share or Embed source code
					
					
					
					

						
						
						
						
						
						
						
					

					
						
	
	
	
	
					
					
					
					
					 
					
					
					
					 
					
					
					
					
					
					

					

					

					
						
					

					


	
Discover > Sphere Engine API

	
The brand new service which powers Ideone!

	
	
Discover > IDE Widget

    
Widget for compiling and running the source code in a web browser!