Multi-level 'break'
Miscellaneous h4xx0r note: PHP has a mutli-level break
which I had not seen before in a language. Used normally, break will exit the current loop (while, for, etc). Using the optional integer argument:
break n
will break you out of as many nested loops as specified. For example:
10 /* Using the optional argument. */ 11 $i = 0; 12 while ( ++$i ) { 13 switch ( $i ) { 14 case 5: 15 echo "At 5
"; 16 break 1; /* Exit only the switch. */ 17 case 10: 18 echo "At 10; quitting
\n"; 19 break 2; /* Exit the switch and the while. */ 20 default: 21 break; 22 } 23 }
Found here.