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<?php function x($value, $pattern) { $v1 = preg_match("\x01^($pattern)\\z\x01u", $value); echo "1) $value = " . ($v1 ? "A":"N") . "\n"; $v2 = preg_match("#($pattern)#", $value); echo "2) $value = " . ($v2 ? "A":"N") . "\n"; echo $v1 != $v2 ? "!!! mismatch\n---\n" : "----\n"; } x("xaaax", '(.)\1{2,}'); x("xaaax", '(.)\2{2,}'); x("xaaax", '(?:(.)\1{2,})'); x("xaaax", '(?:(.)\2{2,})');
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
1) xaaax = N 2) xaaax = N ---- 1) xaaax = N 2) xaaax = A !!! mismatch --- 1) xaaax = N 2) xaaax = N ---- 1) xaaax = N 2) xaaax = A !!! mismatch ---
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 1) xaaax = N 2) xaaax = N ---- 1) xaaax = N 2) xaaax = A !!! mismatch --- 1) xaaax = N 2) xaaax = N ---- 1) xaaax = N 2) xaaax = A !!! mismatch ---
preferences:
185.32 ms | 402 KiB | 227 Q