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<?php //(?=) - positive lookahead $string = "achei quebra; tem aqui;"; $regex = "/\w+(?=;)/"; preg_match_all($regex, $string, $matches); var_dump($matches); //(?!) - negative lookahead / $regex = "/\b\w+\b(?!;)/"; preg_match_all($regex, $string, $matches); var_dump($matches); //(?<=) - positive lookbehind $string = "dra Julia \ndr Marcos \ndr Mateus \ndra Ana"; $regex = "/(?<=dra\s)(\w+)/im"; preg_match_all($regex, $string, $matches); var_dump($matches); //(?<!) - negative lookbehind $regex = "/(?<!^dra\s)\b\w+\b$/im"; preg_match_all($regex, $string, $matches); var_dump($matches); /* (?>) - atomic group */
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14, 8.4.16, 8.5.0 - 8.5.1
array(1) { [0]=> array(2) { [0]=> string(6) "quebra" [1]=> string(4) "aqui" } } array(1) { [0]=> array(2) { [0]=> string(5) "achei" [1]=> string(3) "tem" } } array(2) { [0]=> array(2) { [0]=> string(5) "Julia" [1]=> string(3) "Ana" } [1]=> array(2) { [0]=> string(5) "Julia" [1]=> string(3) "Ana" } } array(1) { [0]=> array(0) { } }
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.3.28
/bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28)
Process exited with code 1.
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