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/PHP-7.4/ext/mbstring/tests/
H A Dmb_ereg_replace_named_subpatterns.phpt19 // backref 0 works, but 01 is ignored
21 // Numbered backref is ignored if named backrefs are present
23 // An empty backref is ignored
25 // An unclosed backref is ignored
/PHP-7.4/ext/pcre/
H A Dphp_pcre.c1511 static int preg_get_backref(char **str, int *backref) in preg_get_backref() argument
1526 *backref = *walk - '0'; in preg_get_backref()
1532 *backref = *backref * 10 + *walk - '0'; in preg_get_backref()
1624 int backref; /* Backreference number */ in php_pcre_replace_impl() local
1716 if (preg_get_backref(&walk, &backref)) { in php_pcre_replace_impl()
1717 if (backref < count) in php_pcre_replace_impl()
1718 new_len += offsets[(backref<<1)+1] - offsets[backref<<1]; in php_pcre_replace_impl()
1759 if (preg_get_backref(&walk, &backref)) { in php_pcre_replace_impl()
1760 if (backref < count) { in php_pcre_replace_impl()
1761 match_len = offsets[(backref<<1)+1] - offsets[backref<<1]; in php_pcre_replace_impl()
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