PHP如何使用preg_replace替换\\与\

Question

i want to replace \\ with \ in PHP i tried this code but it doesn't work any idea ?

$var= preg_replace('/\\\\/', "\\", $var);

thanks a lot

Answer 1

Use stripcslashes() or stripslashes() instead. There is no good reason for regular expressions here and on the other hand they are more expensive than the built-in functions.