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run code in 300+ PHP versions simultaneously
<?php $x = ' \Downarrow \Leftarrow \Leftrightarrow \Longleftarrow \Longleftrightarrow \Longrightarrow \Rightarrow \Uparrow \Updownarrow \downarrow \hookleftarrow \hookrightarrow \leftarrow \leftharpoondown \leftharpoonup \leftrightarrow \longleftarrow \longleftrightarrow \longmapsto \longrightarrow \mapsto \nearrow \nwarrow \rightarrow \rightharpoondown \rightharpoonup \rightleftharpoons \searrow \swarrow \uparrow \updownarrow '; $x = array_filter(preg_split('/\s+/', $x)); usort($x, function ($a, $b) { return strcmp(strtolower($a), strtolower($b)); }); foreach ($x as $xx) { echo $xx, "\n"; }
Output for 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
\Downarrow \downarrow \hookleftarrow \hookrightarrow \Leftarrow \leftarrow \leftharpoondown \leftharpoonup \Leftrightarrow \leftrightarrow \Longleftarrow \longleftarrow \Longleftrightarrow \longleftrightarrow \longmapsto \Longrightarrow \longrightarrow \mapsto \nearrow \nwarrow \Rightarrow \rightarrow \rightharpoondown \rightharpoonup \rightleftharpoons \searrow \swarrow \Uparrow \uparrow \Updownarrow \updownarrow
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 \Downarrow \downarrow \hookleftarrow \hookrightarrow \Leftarrow \leftarrow \leftharpoondown \leftharpoonup \Leftrightarrow \leftrightarrow \Longleftarrow \longleftarrow \Longleftrightarrow \longleftrightarrow \longmapsto \Longrightarrow \longrightarrow \mapsto \nearrow \nwarrow \Rightarrow \rightarrow \rightharpoondown \rightharpoonup \rightleftharpoons \searrow \swarrow \Uparrow \uparrow \Updownarrow \updownarrow
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
\Downarrow \downarrow \hookleftarrow \hookrightarrow \Leftarrow \leftarrow \leftharpoondown \leftharpoonup \leftrightarrow \Leftrightarrow \Longleftarrow \longleftarrow \longleftrightarrow \Longleftrightarrow \longmapsto \longrightarrow \Longrightarrow \mapsto \nearrow \nwarrow \Rightarrow \rightarrow \rightharpoondown \rightharpoonup \rightleftharpoons \searrow \swarrow \uparrow \Uparrow \Updownarrow \updownarrow
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
\Downarrow \downarrow \hookleftarrow \hookrightarrow \leftarrow \Leftarrow \leftharpoondown \leftharpoonup \leftrightarrow \Leftrightarrow \longleftarrow \Longleftarrow \Longleftrightarrow \longleftrightarrow \longmapsto \longrightarrow \Longrightarrow \mapsto \nearrow \nwarrow \rightarrow \Rightarrow \rightharpoondown \rightharpoonup \rightleftharpoons \searrow \swarrow \uparrow \Uparrow \updownarrow \Updownarrow
preferences:
217.13 ms | 402 KiB | 334 Q