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<?php $allowedAttachmentTypes = '.jpeg,.gif,.png,.jpg,.bmp'; print_r( $allowedAttachmentTypes ); array_walk( (explode( ',', $allowedAttachmentTypes )), function( $var, $index ) use ( &$allowedAttachmentTypes ) { $allowedAttachmentTypes[ $index ] = preg_replace( '#[\s\.]+#', '', $var ); } ); print_r( $allowedAttachmentTypes );
Output for git.master, git.master_jit, rfc.property-hooks
.jpeg,.gif,.png,.jpg,.bmp Notice: Only variables should be passed by reference in /in/Vq0mZ on line 6 Warning: Only the first byte will be assigned to the string offset in /in/Vq0mZ on line 8 Warning: Only the first byte will be assigned to the string offset in /in/Vq0mZ on line 8 Warning: Only the first byte will be assigned to the string offset in /in/Vq0mZ on line 8 Warning: Only the first byte will be assigned to the string offset in /in/Vq0mZ on line 8 Warning: Only the first byte will be assigned to the string offset in /in/Vq0mZ on line 8 jgpjb,.gif,.png,.jpg,.bmp

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