Normal match:
array(1) {
[0]=>
string(3) "two"
}
Unmatched $1 is not reported:
array(1) {
[0]=>
string(3) "two"
}
array(1) {
[0]=>
string(3) "two"
}
Unmatched $1 is reported if $2 is set:
array(3) {
[0]=>
string(3) "two"
[1]=>
string(0) ""
[2]=>
string(3) "two"
}
Unmatched $2 is not reported even though $1 is set:
array(2) {
[0]=>
string(3) "two"
[1]=>
string(3) "two"
}
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Normal match:
array(1) {
[0]=>
string(3) "two"
}
Unmatched $1 is not reported:
array(1) {
[0]=>
string(3) "two"
}
array(1) {
[0]=>
string(3) "two"
}
Unmatched $1 is reported if $2 is set:
array(3) {
[0]=>
string(3) "two"
[1]=>
string(0) ""
[2]=>
string(3) "two"
}
Unmatched $2 is not reported even though $1 is set:
array(2) {
[0]=>
string(3) "two"
[1]=>
string(3) "two"
}