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<?php $requiredFields = ['name', 'age', 'hair_colour']; // Note: $errorString is not initialised foreach ( $requiredFields as $field ) { if ( ! isset($_POST[$field]) ) { $errorString .= "Missing required field '$field'. "; } } echo $errorString;
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
Warning: Undefined variable $errorString in /in/pP5CU on line 8 Missing required field 'name'. Missing required field 'age'. Missing required field 'hair_colour'.
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 7.4.0 - 7.4.33
Notice: Undefined variable: errorString in /in/pP5CU on line 8 Missing required field 'name'. Missing required field 'age'. Missing required field 'hair_colour'.
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163.5 ms | 409 KiB | 5 Q