3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = ['393451234567', '393479876543']; echo http_build_query(['recipients' => $array]); echo "\n---\n"; echo implode('&', substr_replace($array, 'recipients[]=', 0, 0));
Output for 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 - 8.5.1
recipients%5B0%5D=393451234567&recipients%5B1%5D=393479876543 --- recipients[]=393451234567&recipients[]=393479876543
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.

preferences:
79.86 ms | 407 KiB | 5 Q