A simple question about regular experession

[kshahnazari]

I have a simple question about regular expression and Im new to php so sry about my bad questions , what is the meaning of ^ and $ in regular expression and please give examples that if we dont put them it will go wrong . thank you

[pritaeas]

^ indicates the start of a string, $ indicates the end. You can read more about anchors here.

[kshahnazari]

and what about | ? in regular expression ?

[pritaeas]

I suggest you read the full tutorial first. If you still have questions afterwards, come back here.

[kshahnazari]

tnx