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run code in 300+ PHP versions simultaneously
<?php $a = array(3,4); $b =& $a; $c =& $a; var_dump( is_same_ref( $a, $b )); $a[] = 5; $b[] = 6; var_dump( implode( $a ), implode( $b ), implode( $c )); function is_same_ref( & $a, & $b ){ // Save original values $ori_a = $a; $ori_b = $b; // Give them different values $a = 1; $b = 2; // Compare them, if they're equal, they are references to each other $eq = $a === $b; // Restore original values $a = $ori_a; $b = $ori_b; return $eq; }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
bool(true) string(4) "3456" string(4) "3456" string(4) "3456"
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.
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124.77 ms | 407 KiB | 5 Q