s*****w
发帖数: 1527 | 1 i have the following code
$forthChar = substr($tmpLine, 3, 1);
print "--".$forthChar."--\n";
if ($forthChar == " ") {
} else {
print "not same\n";
}
this is what i get |
p**i
发帖数: 688 | 2
$forthChar eq " " , == is for numeric equality
【在 s*****w 的大作中提到】
: i have the following code
: $forthChar = substr($tmpLine, 3, 1);
: print "--".$forthChar."--\n";
: if ($forthChar == " ") {
: } else {
: print "not same\n";
: }
: this is what i get
|
m*********g
发帖数: 273 | 3 right
use eq please
【在 p**i 的大作中提到】
:
: $forthChar eq " " , == is for numeric equality
|
t*****g
发帖数: 1275 | 4 use eq instead of == for string comparison.
Why don't you use regex
$tmpLine =~ /^.{3} /
【在 s*****w 的大作中提到】
: i have the following code
: $forthChar = substr($tmpLine, 3, 1);
: print "--".$forthChar."--\n";
: if ($forthChar == " ") {
: } else {
: print "not same\n";
: }
: this is what i get
|
L*1
发帖数: 11537 | 5 十多年前也犯过用“＝＝”的错误，弄了一天才明白要用“eq”。
【在 s*****w 的大作中提到】
: i have the following code
: $forthChar = substr($tmpLine, 3, 1);
: print "--".$forthChar."--\n";
: if ($forthChar == " ") {
: } else {
: print "not same\n";
: }
: this is what i get
|
