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run code in 300+ PHP versions simultaneously
<?php $string = 'goofe eas تان ک'.chr( bindec( '11111100' ) ).'ے عسکری ذرائع کے مطابق بدھ' .chr( bindec( '11011111' ) ); mb_set_internal_encoding( 'utf-8' ); echo mb_substr( $string , 6 )."\n"; echo mb_substr( $string , 6 , 4 )."\n"; echo mb_substr( $string , 6 , -4 )."\n"; echo mb_substr( $string , -4 )."\n"; exit(0);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function mb_set_internal_encoding() in /in/Z7sLg:5 Stack trace: #0 {main} thrown in /in/Z7sLg on line 5
Process exited with code 255.

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