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run code in 300+ PHP versions simultaneously
<?php $arr =[ "id" => "integer:>0", "interval_id" => "string:!empty", "miles" => "integer:optional", "kms" => "integer:optional", "created_by" => "string:!empty|null", "created_at" => "integer:>0|null", "updated_by" => "string:!empty|null", "updated_at" => "integer:>0|null" ]; foreach ($arr as $key => $value) { // echo $key, "==>", $value, "\n"; if ( substr_count($value, 'optional')){ echo $key, "\n"; } }
Output for 5.6.0 - 5.6.27, 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
miles kms
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 miles kms
preferences:
206.87 ms | 402 KiB | 231 Q