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<?php // pcre $someEmoji = '@^[\u{1F602}-\u{1F64F}]+$@u'; var_dump(preg_match($someEmoji, "\u{1F602}")); // php $someEmoji = "@^[\u{1F602}-\u{1F64F}]+$@u"; var_dump(preg_match($someEmoji, "\u{1F602}"));
Output for git.master_jit, git.master, rfc.property-hooks
Warning: preg_match(): Compilation failed: PCRE2 does not support \F, \L, \l, \N{name}, \U, or \u at offset 4 in /in/pCUrf on line 5 bool(false) int(1)

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