PHP 4.0 Bug #3657: ereg_replace behavior changed from php3.

From: joakim@erdfelt.net Operating system: win32 PHP version: 4.0 Beta 4 Patch Level 1 PHP Bug Type: Misbehaving function Bug description: ereg_replace behavior changed from php3. Experienced some difficulty when moving from php3 to php4 and using the class.FastTemplate.php3 (from www.thewebmasters.net). I traced the offending code down to how ereg_replace works. The following example of various uses of the ereg_replace should produce the string "This is a replaced String" each and every time. (which it does do under php3, but not php4) Since I couldn't find any doc stating that the behaviour was intentionally changed, I'm assuming that this is a legitimate bug. it seems to stem from the use of "{$key}" in the $pattern. /* the code example (short) */ $key = "TEST"; $str = "This is a {TEST} String"; echo ereg_replace("{$key}", "replace", $str); /* produces "This is a {replaced} String" */ /* Example php code (longer) ------------ */ $string = "This is a {TEST} String"; $key = "TEST"; $srch1 = "{$key}"; $srch2 = "{" . $key . "}"; echo ereg_replace( "{TEST}", "replaced", $string ) . "\n"; echo ereg_replace( "{$key}", "replaced", $string ) . "\n"; echo ereg_replace( "{" . $key . "}", "replaced", $string ) . "\n"; echo ereg_replace( $srch1, "replaced", $string ) . "\n"; echo ereg_replace( $srch2, "replaced", $string ) . "\n"; echo ereg_replace( "(\{[A-Z0-9_]+\})", "replaced", $string ) . "\n"; echo ereg_replace( "{([A-Z0-9_]+)}", "replaced", $string ) . "\n"; /* ----------- end of example code. */